With Jon Snow firmly established as Dany’s new lover in the series, one has to wonder if the showrunners are trying to revive this old idea by having Tyrion and Jon become bitter enemies.
With the two already showing such mutual respect for one another throughout the show, a love triangle would really be the only way to cause this tension.
This outline has plenty of plot elements that are not consistent with the series Game of Thrones or the books, meaning we can’t take it for gospel, but there are some similarities that make that Season 7 scene very curious.