Perhaps you could somehow run openvpn in Termux as SOCKS proxy on localhost. Then connect another instance to that, again, again, again,…
Then finally try using OpenVPN Android app and connect to the last proxy. Don’t forget split-tunelling for termux.
But… you’re not connected to all of them. At least it seems.
Well you can only have one vpn on at a time. on normal android anyways. Im pretty sure you could change that but i got no clue about networking
Perhaps you could somehow run openvpn in Termux as SOCKS proxy on localhost. Then connect another instance to that, again, again, again,…
Then finally try using OpenVPN Android app and connect to the last proxy. Don’t forget split-tunelling for termux.