In order for us to replicate your issue, we would need the following details from your end:-
1. Please share the "config.log" file from your Project2.0 and Project3.1 folder.
2. It would help to know the details of the steps followed at your end to test your issue.
Intel Customer Support
Agent under contract to Intel
Dear CK-san, arun-san.
Thank you for helping.
Excuse me, we got a cause of this issue.
BlueZ hcitool source code will exit lescan task by any sub-events except advertise sub-event.
Therefore, hcitool lescan stops by btgatt connect command.
I'm not sure why IDP2.0 can work Scan and Connect tasks simultaneously.
But, it is the out of specification behavior.
Please close this issue.