For some reason I've always thought, from the very first episodes, that Tyrell and Elliott were linked from more than just a common interest and a pretended rivalry. Many hints have been left and some are linked even through distant seasons of the show. For example, in the world of F, Elliott discover that his happy alterego owns the very same car (parked in the very same spot) that Tyrell owned and left in season 2. Furthermore the Tyrell of the world of F feels to be misplaced and unhappy (in opposition to everyone else). Not to mention that during the walk through the forest, when Tyrell apparently dies (but is never found!), he points out to the fact that Elliot is always the same, that he dress always in the same way (as well as Mr. Robot and his other personalities) and that he adore him because he does not care (he is free). Fact is, if, as revealed later on, the Elliott we see is just another persona, another projection of Elliott mind, how can Tyrell see how he is dressed? And if Tyrell parted ways with Elliott, where Elliott did found his phone? There are many other stuff, like the famous greet in Danish to Elliott from Johanna (the first time they meet, if I do remember right) and the subsequent threat to Elliott (Johanna was threatening a person or a personality?), or when Tyrell called and cried to Angela after shooting Elliott (when they did become so close?!) In conclusion, leaving alone all the phylosophical stuff the show puts on, and considering how many psychological traits Tyrell share with all of Elliott's personalities, could it be that we have seen the whole show's main protagonist called with a fictional name (afterall the E-corp isn't actually called E-corp), could it be that the man we see as Tyrell Wellick is actually Elliott Alderson's true persona? What do you think? Anyway, that is/was a great show. They took all the best of fight club and bringed it to another level of madness. 😁