JBL Party Mode - JBL Connect Plus (Test) - YouTube
How do you connect multiple JBL speakers to each other? - Coolblue - anything for a smile
JDay's Technical Blog: JBL Connect vs JBL Connect Plus - JBL Flip 4 cannot connect to any other JBL Speakers
GitHub - pembem22/connect-plus: An Android app to connect and configure JBL Bluetooth speakers with additional functionality like flashing custom firmware and stereo audio playback with different speaker models.
How do you connect multiple JBL speakers to each other? - Coolblue - anything for a smile
How to Link JBL Speakers
How To Connect Multiple JBL Speakers Together? (2 Steps)