A single Tor connection doesn't protect you from correlation attacks; Wasabi does take this into account.
Be careful about recommending Tor and assuming that Tor alone makes you anonymous against a state-sponsored attack.
Bitcoin Core also takes this into account with its new private sending feature.
The Tor browser itself takes this into account—each tab uses a separate circuit.
Unfortunately, most apps that use Tor do not take this into account and use only one circuit; for example, Samurai and most Monero wallets had this problem.
