Good point about Matt's dad. I think I'd compartmentalized their alliance as a recent thing, but you're right that that alliance could totally have dated back to their younger days.

1977-Adam's line "Someone has to make the hard choice for the greater good" definitely sounded like Linderman with his 0.07%. They knew Strain 138 would basically kill everyone, though, which is a much bigger thing -- though Linderman could heal, so yeah, I could see that possibility.