If I shut-off the Galaxy Note 10 Plus phone, the Edge 1030 Plus uploads the latest ride without hesitation using WiFi.
If I disable the WiFi on the Edge 1030 Plus, leaving the "auto upload" enabled, and leave my Galaxy Note 10 Plus phone active, the Edge 1030 Plus uploads the latest ride without hesitation using Bluetooth via the Garmin Android Connect app.
Thus, it appears that there is a conflict between the WiFi and the Bluetooth network connectivity.
Since I need to have Messaging enabled due to on-call 24/7 responsibilities, I disabled the WiFi in the Edge 1030 Plus.
NOTE: My Edge 1030 Plus has the latest 3.0 firmware, Garmin Connect app 4.34 and my Galaxy Note 10 Plus is also up to date.