On a linux box, is it possible to run tailscale/wireguard as an exit node along with Forti vpn?

Aka what I want to achieve is (my-machine + tail/wireguard) --> (server with tailscale/wireguard + forti vpn) --> Corporate network. So wireguard or tailscale to receive traffic and forward it through forti.

Or another option (my machine fortivpn over tail/wireguard) --> (server as exit node) --> corporate network

Rather than using the official forticlient I am using https://github.com/adrienverge/openfortivpn. It has some options to configure custom pppd/routes/dns etc if necessary, which I have not touched as I don't know enough :P DNS resolution is not important for my usecase, only traffic.