A couple of question on squad building and affiliations

[GOSE]

It is possible to lose the affiliation during a game if my models remaining on the board of the declared affiliation are no longer more than the 50% of the team? And what happens to my affiliation tactic card?

When exactly is declared what affiliation i`m playing? If i ,for exemple, bring a team composed by Black panther, okoye, taskmaster, captain america ,iron man i could play both affiliation.
It is declared after you deploy (like when you have multiple leaders for the same affiliation) or when you reveal the squad?

Thanks 

[Negoldar]

It is not possible to lose your affiliation during the game. 

Affiliation is declared when squads are revealed. Note that you cannot include affiliated tactic cards that are not affiliated with your squad.