Because the IP WAN appears in the source column and not the LAN
I attach an example:
73314 2019-04-05 11:35:23.521615 200.72.45.230 200.72.1.253 DNS 76 Standard query 0x731e A www.facebook.com
Indicate that the source IP is that of my team, but instead of the lan, the wan appears.
I'm unable to understand your question, where does the "WAN" appear in the above packet excerpt, where is the "LAN", what is your "team", remember we don't know your network.