Can Traefik be layered?

I've been selfhosting for a bit, but have never really gotten a solid understanding of Traefik.

What I'd like to do is have 3 machines, 1 as an "entry point" where Traefik forwards by domain to the two other machines. Ie I route to anything.domain1.com and the entry machine forwards to machine 1, anything.domain2.com forwards to machine 2.

Then on each machine have another instance of Traefik to manage the applications that machine hosts.

Is this even possible? Without using docker swarm?

Thanks.