When you first meet col. korshunov and dr. dalin around the slag heap area, its best to keep that unusual pda hidden and pick do not show - this keeps your options open and lets you move through quicker without getting tied down. The interesting part is when you get to scars camp later where youll want to stay careful with that pda again, since showing it can lock you into some tough spots with different groups especially if youve been dealing with ward before.

The whole thing basically works like this - if you show the pda too early, korshunov kind of forces you down the ward path, and if you show it to scar after working with ward earlier, some groups might not want anything to do with you anymore. Getting the timing right here is super important since these choices stick with you through the game.

Tip: might be worth making a save before any big talks with these guys, since some dialogue choices can really change how different groups treat you later on. Watch out for when scar mentions anything about ward - if he says stuff like we know youre with ward youve probably shown your cards too early and might want to reload that save.