And technically, Bitcoin onchain transactions are not peer to peer. They propagate to the whole network. Lightning transactions, that's peer to peer.
So you don't consider a node as a peer in P2P/Bitcoin network?
I didn't say that. What I said was, in an onchain transaction, a transaction from a peer to the intended peer doesn't directly go from the peer to the intended peer. It is propagated to the network for all nodes to validate.
And as reminder, LN have routing feature where you're not directly connected to another node to send/receive Bitcoin.
OK, then in the Lightning Network, it's peer to peer to peer to peer, depending on how many routes.