Anyways, as I made mention of before, there is a connection between being an avatar of Aka, and an avatar of Lorkhan. This connection comes from the bond Akatosh and Lorkhan share, a bond that stretches back to when they were created, and indeed long before that.
This connection is that Akatosh and Lorkhan are the same being, now I know most of you will be like "but... but... no they aren't" to which I will say, "yes they are" and "It has even been stated by the devs, and shown in the games themselves".
This whole thing begins before the release of Oblivion, MK, also known as Michael Kirkbride, stated that it was Shezzar who put Alessia into the Amulet of Kings, the original quote has long since been lost due to edits, forum archiving and the like, however discussions about it still exist as I will link below.
The Imperial Library - http://www.imperial-library.info/ForumArchives/AmuletAmulet.html
UESP - http://www.uesp.net/wiki/Lore_talk:Amulet_of_Kings#Shezzar_and_the_Chim-el_Adabal
However, when Oblivion came around, the book "The Amulet of Kings" stated it was Akatosh who put Alessia into the amulet.
http://www.uesp.net/wiki/Lore:The_Amulet_of_Kings
This creates a contradiction..... or so it would seem. I am going to leave this hanging for a bit as I continue.
Next, I would like to point out the stained glass windows that depict Akatosh in the chapels in Oblivion.
Do you notice anything about it? Look closer at the head area. Do you see that Akatosh has two heads, one of a man and one of a Dragon? Odd indeed, I will leave this for now while asking a simple question, do you know who the god of man is?
Now I will skip over to Skyrim.
As you are obviously aware of there is a statue in Whiterun, and in several places across Skyrim, that depict Talos standing on a snake, while Talos points a sword at the snake's open mouth.
This statue is very symbolic in many ways, many important ways.
Let us take a look at the snake shall we? The snake is important because of old Nordic tradition, in the ancient past the Nords used animal totems to represent their gods, these animals were the hawk, wolf, snake, moth, owl, whale, bear, fox, and the dragon.
http://www.uesp.net/wiki/Lore:The_Dragon_War
These animals should be well known to any Skyrim player as they appear throughout Nordic ruins. However there are three I want to talk about the most, specifically the snake, the whale, and the Hawk.
As you may remember the snake, the whale, and the hawk appeared on those spinning pillar puzzels. But what gods do they represent?
The Snake - Sep (The Snake): Yokudan version of Lorkhan. Shor (God of the Underworld): Nordic version of Lorkhan
The Hawk - Kyne (Kiss At the End): Nordic Goddess of the Storm. Widow of Shor and favored god of warriors.
The Whale - Tsun: Extinct Nordic god of trials against adversity. As you recall you met Tsun in Skyrim were he defended the WHALEBONE bridge.
http://www.uesp.net/wiki/Lore:Varieties_of_Faith_in_the_Empire
Does anyone else find it fitting that the Nords would use their leader Shor, his wife Kyne, and their shield-thane Tsun as the gods to mark their burial tombs?
Now lets look back at another feature of the statue I mentioned before, specifically the part were the snake's mouth is open and Talos is pointing a sword at it. Furthermore let us take a look at the shrine of Akatosh as depicted in Skyrim.
what can we see from this shrine of Akatosh?
We can make out a dragon's head and a dragon's wings but there is something off about his body isn't there? His body is not that of a dragon, it does not have arms or legs, it is the body of a serpent the body of a coiled snake.
Furthermore his mouth is open while a sword is being placed into it. Does that remind you of anything? Because it sounds a lot like the Statue of Talos were he is placed a sword into the mouth of a snake, a snake we have determined to be Lorkhan.
The discrepancy between who put Alessia into the amulet
The dual headed window in Oblivion depecting a dragon and a man
The god statues that depict a sword being placed into a snake's open mouth
Akatosh and Lorkhan share a lot in common, maybe because they are the same being?
I would now like to give you a quote from Michal Kirkbride himself
http://www.imperial-library.info/ForumArchives/AmuletAmulet.html
MK said:
You guessed it. The Arena is a collection of pseudo-imagos, all the way down to the core. Lorkhan is Akatosh, the Dragon God of Time is the Missing God of Change.
Akatosh, time, is Lorkhan, change
Lorkhan, chaos, is Akatosh, order
Seen as two, but really one.