Migration wizard doesn't connect two Apple machines
I just bought a MacBook Pro 2020 running Catalina and I am trying to use the migration wizard to bring files over from my iMAC mid 2010 running High Sierra.
The migration assistant opens properly on both machines, and I make these selections:
iMAC - "To another Mac"
MacBook - "From a Mac, Time Machine backup, or startup disk"
I hit continue and the iMAC shows up as a choice to select on the MacBook and then I hit continue. That's when I receive a message saying MacBook can not connect to the iMAC.
I have verified (using system preferences>network) that both machines are running on the same wireless network.
What would be the next steps?
iPad Pro, iPadOS 13