Hello and welcome!
It appears you are trying to use two different network interfaces -- em0 and iwn0 -- on the same subnet: 192.168.1.0/24. This is a configuration error.
The appropriate way to share the same subnet with two NICs is via trunk(4). The man page has an example of using a wired and wireless NIC together in a failover trunk.
I have an X220 also. My wireless NIC is an rtwn(4) instead of iwn(4).
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