Made 'Game of Thrones' Cameo

... You Dead, Bro?

Aaron Rodgers was DEFINITELY in last night's episode of "Game of Thrones" ... but the question -- did he die or what?!

The Green Bay Packers not only posted a photo showing himself in full #GoT costume, but he also participated in a promotional package for the episode.

Here's the problem ... Aaron's cameo (or cameos?) was so brief, there's a debate over whether he survived Daenerys Targaryen's dragon-led assault on King's Landing.

Rodgers was first spotted as an archer in the Lannister army -- but that doesn't match the costume from his IG photo.

There's also video of him helping (?) a woman during the assault on the city. And then more footage shows a person who looks like…