In reading some additional information, I now remember that the message I get when trying to boot the external "Windows to go" drive is, or something very similar:
"You can't change the startup disc to the selected disc. The bless tool was unable to set the current boot disk."
Not sure if that helps zero in on the issue?
[automerge]1575322013[/automerge]
Just read a thread about someone having trouble creating a bootable drive that uses USB 3.0. Could it be that my 2016 MacBook Pro does not support USB 3.0? NEVER MIND, IT LOOKS LIKE THE t5 IS COMPATIBLE WITH usb 2.0 AND 3.0.