Agreed. As an active CISSP, digital forensics has a very specific list of requirements for capture and storage of criminally relevant data. Packet captures must occur at the time of the crime, and they must have a chain of custody.
To have captured any data on election night would’ve required they perform the captures on site AND they would’ve had to have used some type of SSL/TLS packet inspection to even see what was being set in those packets. All of this assumes they were using encryption at all.
If Dominion and others were doing all of this in cleartext, Katie bar the door.
And don’t forget, even if all the network stuff magically had happened, it would be highly unlikely the sniffers would be able to understand the packet data, which would most likely have been low level rpc calls to/from the Dominion system and/or low level debugger actions to running processes.