With regard to the lovers, and having 1 mafioso inside of them.

Mafia - Mafia lovers ruled out mechanically by host confirmed info.

Mafia - survivor lovers ruled out, because there's essentially zero difference between that and the above. The survivor only cares about making it to endgame, and living, and that's the same as the mafia pretty much, and the survivor would be able to talk to someone who has a kill, making them only different from mafia on paper.

Mafia - 3p Lover lovers... like, a nominal "townie" who wins only if they survive the game, is not a townie. I remember the game I was in where I was a neutral lover, and my partner was a townie lover, but the win condition was us both being the last ones standing. Technically, that's not townie or neutral, but Lover alignment. That's just mafia with a special win condition, and I've ruled this out because it's still identical to the mafia - mafia lovers.

So, to put it another way, this is "lovers" being used in a way that is semi-foreign to my experience. I've seen the lovers mechanic appended to literal townies or scumbags in a mash setting, and this might be how lovers are used elsewhere as well. It simply means that they die, nothing more about alignment or win condition.

With those ruled out there are only two scenarios, which is that one of Csargo and Montmorency are literal townies, or both are and they both die.

This means that if they did truly suspect the other, they must lynch there, or they lose the game.

Exploring that idea next.