Actually, the following article provides a "Tip" section specific to my question that actually solved my problem.
https://learn.microsoft.com/en-us/windows-server/storage/storage-migration-service/overview
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This question surrounds SMS and WAC. Is it possible to manually install the SMS-Proxy feature on the destination server. It won't install at the "Install required features" section of the "Transfer data" piece. No error message, it just stays at Installing 0% (24 hours later). All servers are on the same subnet, can ping and access each other, have been patched and rebooted, have their firewall disabled (as a test), etc. There isn't much out there about dealing with SMS issues when things don't go as planned. I've watched several videos on how to do it.
Actually, the following article provides a "Tip" section specific to my question that actually solved my problem.
https://learn.microsoft.com/en-us/windows-server/storage/storage-migration-service/overview