Wireless stop working after enabling Ethernet

[janbaztaimoor]

I have two laptop's both have installed Centos 7. Both are connected to a wireless access point for internet connectivity. I also have connected them to each other through a switch as a lab for My RHCSA exam.
The problem is whenever I connect them through switch, they lose internet connectivity. Wireless connection is working they have their IP Addresses but no internet connectivity.
To bring back the internet connectivity I have to disable the Ethernet adapters through NMCLI command.
I just have started using LINUX so I must be missing something.

JANBAZ

[beta-tester]

what are the ip addresses of wireless and ethernet.
what is the gateway ip.

what is ifconfig giving and what route (with and without ethernet connection)?