So, after a some CSI I notice that inbound packages where reaching the target machine, the problem was that the Firewall B didnt knew where to sent back the response, so I added a new rule in NAT Outbound for this particular device, and worked like a charm:
[image: 1595436390941-0d66b8df-182e-417f-b492-f56c1d24b4d4-image.png]
NOTE: Firewall B doesnt use Firewall A gateway, its a "hybrid" VPN.