SourceConnect RTS in Pro vs Standard
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Regarding the play button:
1. RTS sender is on SCPro
— they press play in their DAW then the RTS receiver chases the sender
— they press play in SC then the RTS sender chases RTS receiver
2. RTS sender is on SCStandard
— the DAW play button is not active for RTS
— only the SC play bottom is an option so the only mode is where the RTS sender chases he RTS receiver.
source: SourceElements/Community