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Concurrent actions BLE s130 SDK 11

Hi !

I'm using S130 softdevice on SDK 11 as central. I'm wondering if there are any conflits in the stack I should be warned. I know it is not allowed to start connection and scanning at the same time, and it is not allowed to start more than one connection at a time but,

Is it allowed (safe ?) to start connection while sending write request and/or receiving notification ? Is it allowed (safe ?) to start scanning while sending write request and/or receiving notification ?

I have multiple peripheral devices which can enter or exit the area, and time is a critical ressource in my case. I must know which task i can parallelize or not ?

Thanks a lot for your help