Unless your local router tunnels the DNS traffic via other means. The clients may see slightly higher latency, but for <16 host hotspots it would be negligible.
It is quite easy for example, to bonce traffic through a reverse proxy on a Tor tunnel, and start ignoring spoofed drop-connection packets (hence these bypass local DNS, tunnel to a proxy IP to obfuscate Tor traffic detection, and exit someplace new every minute or so.) This is a common method to escape the cellular LTE/G5 network sandbox.
Ever played chase the Kl0wN? Some folks are difficult to find for various reasons.
Have a nice day, =3