info for link radio 2 firewall

Good Morning 

I'm a question

Now there is 

FIREWALL 80C                                                             

WAN 1 | WAN 2 | LAN 1 ( 192.168.120.250 /24)| LAN 5 (192.168.90.1/24) |            

VPN 192.168.120.X 10.2.X.X     WAN 1 Firewall 80c WAN1 Firewall 50B             

FIREWALL 50B

WAN 1 | WAN 2 | LAN 1 (10.2.1.2/16 Second ip 192.168.90.254/24)  |

Now there is the link radio to Firewall 80c lan 5 goto to Firewall 50b  lan 1 

Is it possible create route

Lan 1 Firewall 80c goto 10.2.x.x link radio 

Thank you very mutch