Curious if large file transfer could crash network

I have my Eero 6 up for about two weeks now. I have been very happy with it and my coverage. Twice now the network has gone offline and I needed to restart it all. I am not sure what may be causing this or if it’s a fluke. This has happened while I have been copying a very large 1TB + MacBook sparse bundle file from a network share drive onto a portable HD plugged into my laptop. That process is literally over a day long to complete. Actually haven’t successfully completed it yet. Could the constant stress from transferring that file cause the network to crash? That’s my guess anyway.