So I get that lightning network is a payment channel which is essentially a 2/2 multisig wallet between two party and since it's a wallet, the transfer between the two party actually doesn't really "happen" from Blockchain perspective as it's never broadcasted and as it is just the same fund going back and forth inside the same wallet

But what I don't get are

1. If it's 2/2 multisig, how come one party can broadcast the transaction? Or can't it?

2. If I open two payment channel using the same wallet. Do I

A. have two separate 2/2 multi sig? Or

B. do I now have one 2/3 or 3/3 multi sig?

If it's A, then how do lightning network actually works between channel? As that is already different wallet and for transfer to Happen it must be broadcasted to bitcoin network

Sorry for the stupid question. I'm not a tech guy but I do love digging deeper into bitcoin rabbit hole even without coding knowledge