If a Bluetooth connection is no longer needed or not wanted, the pairing can be cancelled on the Samsung device, which requires a new pairing and no longer automatically connects.

Android 10 (One UI 2.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Connections
Step 3:  Tap on  Bluetooth
Step 4:  Open the  Settings  of paired device
Step 5:  Tap on  Unpair
  1. Open the Settings
  2. Tap on Connections
  3. Tap on Bluetooth
  4. Open the Settings of paired device
  5. Tap on Unpair

Samsung Instructions