Testing puck.js from windows and Android ?

This is just the way it works. Devices can only have one connection at a time. They advertise when they are not connected to another device. When they are connected, advertising stops.

Not having immersed myself much into Bluetooth/BLE, this question popped-up for me:

Can a device scan between (individual) advertisements? I know that the purpose of advertising is to say I can be connected to... and that would be not possible while a device is scanning and I know that scanning is a comparably time-consuming / lengthy / power-consuming.