Don't know much about this topic but, in joining together, couldn't it just mean Talos granting a blessing on the Septim blood, or say, granting a small piece of his power to the blood? Something to do with the pact of the amulet maybe. And just for grins, what is the signifigance of Martin and his link to Talos on this discussion?

The One Sermon of the Nerevarine, Sermon One

Then from outside the Provisional House, came a visitor for the one half of the Serpent of the Middle Air, whose hands were black, but not from apotheosis.

"Vehk, the Hortator has come. Though I may come again and again by your will alone. This time you will see that I have come by my will alone."

For a long while Vivec did not answer.

"This time you will betray your nature."

For a long while Vivec did not answer.

"This time your nature has betrayed you."

Then after a time Vivec addressed the Hortator.

"Azura, shade of my Brother, has truly completed her revenge."

The Hortator looked confused, and sat down on a pyre that was fueled with crab shells, and lit with the corner of Dagon.

Vivec looked down at the Hortator, and his eyes were all the shades of the rainbow.

"I killed the two-headed king, whom a river flows into his mouth."

"Then that revenge was revisted on you."

Vivec looked confused, and sat down on a bull-headed statue whose name was not yet revealed to the Northern Demons.

"What do you mean?"

"He gave you me, didn't he?"

"Yes, but..."

"Then I rest my case."

The ending of the words is VI.

A god.