2 x alexa echo playing same radio station but they are completely out of sync

[hrpuffnstuff]

1 x alexa is in the lounge
1 x alexa is in the bedroom
I ask "Alexa open global player and play smooth radio"
I do this separately for both alexa
They both play the same station but are completely out of sync by about 1 minute
I have both of them on speaker group, but when i ask alexa to play the radio station on this group Im met with silence, and she carries on playing out of sync
Help please?
BTW...its radio stations I want to play on BOTH alexa but in sync with each other

[renegade600]

did you setup a multi speaker group?

Open the Alexa app
Open Devices
Select Plus and then select Combine Speakers
Select Multi-Room Music
Follow the instructions in the app