Question: Why not Sync with active connections?

I understand that we are only syncing with connections who:
1.
Who we trust OR are sites
2.
Same mintter p2p protocol version
3.
Same testnet
My concern is with #1. I understand it takes heavy DHT resources to find peers to connect to. But if we are already connected, and the protocol and testnet match, why can't we sync with them?
Containing:
First Version
Open in Mintter app