WAN Group (Failover) Wireguard Gateway

[Lip90]

Hello everyone,

I have two WAN interfaces.

Interfaces:
WAN1 -> PPPoE
WAN2 -> LTE
WAN_VPN -> Wireguard Gateway to external Endpoint for special clients

WAN1 and WAN2 are in a gateway group with failover.

Attached is a network diagram of what this should look like.

Is it possible to configure that WAN_VPN only runs over the WAN1 (PPPoE) line? If the PPPoE connection drops, WAN_VPN should also stop working. WAN2 should then only maintain the Internet but not the connection to the WAN_VPN endpoint.