1 - The thing is they already captured one of the mercenaries but didnt bother to interrogate.
2 - He didnt order hit himself, Trino was the midman so every clue ends up at Trino. When Trino captured, he interrogated Trino himself and made sure he didnt talk. After interrogaiton completed he just killed Trino, preventing him talking becuse of any "regret" he might have.
3 - There is mole or something problem which reached even their dinner table already, so he can escape from nearly anything withovt doing much.
1. Yeah, true. But he wouldn't have known that they wouldn't interrogate, so there's a potentially large risk he could be exposed to. I do not think that he would leave himself open to potentially being exposed, like that.
2. Yeah, that's totally plausible. But with no indication that he dislikes MC, no indication of him being power hungry or greedy and ambitious, no indication of a reason for him to want to kill MC, it's a currently a bit lacking, in terms of motivation for why he even would.
He even stated that he did not know of MC's importance, so if he was pretty much unaware of him, why would he want to kill him?
Seems a bit random.
3. This one definitely seems to indicate someone higher up but, don't forget, who prepared the food? Who served it?
Is this him organising one of the kitchen/waiting staff to do it, same way as he did with Trino? Definitely plausible.
I'm still left with the question of "why?", though.
Without any motivation established, plus the established narrative that he did not know about the MC, it seems rather improbable that he'd want to kill a guy he didn't know anything about. Particularly not in such dramatic & visible fashion.
Killing MC at their dinner table, is a brazen attack, very disrespectful, so Cordia is not going to take that lying down.
Antonio knows this. If he wanted to get rid of him, I think this way is less probable than him having sent the mercs.
If we'd seen that he'd been trying to start a war, with another family, then we'd have reason.
Family X did this, we must retaliate!