Help tracking down a possible cause for robot disconnects

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When you lose coms, is:
1) The laptop losing connection to the radio WIFI or?
2) Is the roborio no longer responding over Ethernet?
And what is required to get coms back? Power cycle, time, or what?

Related wiring issues we saw this year:
1) Battery Anderson Power Pole CRIMPS did not create a good connection. Wiggling the battery connector & battery wiring could induce loss of power.
2) Radio to RIO Ethernet cable would momentarily lose connection long enough to reset the Ethernet on the RIO resulting in lost coms. This was despite the retaining clip always being secured.