Bridge + stream sniff packets through router

Like subject says, I have situation as in picture. MikroTik work as bridge, and I want to stream sniffed packets from MikroTik (ether1) to computer 192.168.2.5. I’ve tried to add Router as default gateway for ether1 port of MikroTik, but in that configuration i was unable to ping 192.168.2.5 from 192.168.1.5 and vice versa.

P.S. I don’t have any control over Router, just know it’s IP addresses.
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