All about that Tyrell. The long gap of time where Tyrell was missing has been filled in. Turns out he really. really, missed Elliot.
So the Dark Army found Elliot and Tyrell back at the original f society HQ just after the five/nine hack. And Irving was managing that pick up team, so Whiterose has had him in his employ for some time. He separated the two and hid Tyrell from the feds while Elliot went on to commit himself.
It was a rough go for Tyrell, looking at video of his son while he was secluded in a cabin in the woods in New York. Coding and chopping wood seemed to be his only two pastimes while he was there. Being so pull out of society damaged his psyche. Reading that your wife has filed for divorce will do that to a man. And as Tyrell said, if she saw him the way he was there, she never would have taken him back.
We got a sizable nugget from this separation: Tyrell didn’t know Elliot had a split personality. Every time he was with Elliot, it was Mr. Robot. When he talks to Elliot on the phone when he’s locked up (season 2), Tyrell gets upset that Elliot didn’t recognize his voice. Tyrell holds Elliot (the version he knows anyway) in high esteem. He tells everyone that will listen he has to be working with Elliot on Stage 2. It’s not until Elliot is recovering from surgery that Angela tells him about the two personalities. It’s Mr. Robot who wakes up first.
We get another glance of the machinations of Whiterose. The complications of Elliot breaking and committing himself brings us to Whiterose’s right-hand man first expressing his displeasure of the continued insistence on not cutting Elliot loose and moving on without him. Whiterose is none too pleased about what happened but he’s confident in his decisions. Keep an eye on Elliot while he’s there and pull the strings to get him out (which they do). And then comes Donald Trump on TV at the start of his campaigning to become president of the United States. Whiterose found another wildcard to bet on.