NAT to LAN behind second firewall

[hannesk71]

dear all,

I have two opnsense firewalls, which are connected with route base IPSEC. Traffic between both firewall's LANs is working perfectly.
As I have 10 public IP's on firewall A WAN, I'd like to do DNAT to the IP on Firewall B LAN. When I have created firewall rules on firewall A, I get time out while reaching to that public IP. Doing packet capture on Firewall B, I see that packets reach the destination but that's all.

What am I missing?