Access to 2 different tailscales via a different local lan


At a friend home we established this configuration. Every device has installed Openwrt. I would like to be able to do:
a) Access the,,, via the main router leveraging the dumb ap. I don't want to install other Tailscale clients since they don't go along very well with PBR and Wireguard.
b) Leveraging the PBR and the wireguard server installed on the, when connected in LAN or VPN, redirect some traffic towards some specific exit routes.

Is this feasible?