According to the BLE protocol, when a device is advertising, three channels are used to minimize interference and a channel hopping strategy is put in place.
Probably due to my poor knowledge of radio protocols, I am unable to clearly see if an advertise is transmitted
a) on only one of the three channels at any given time;
b) on at least one of the three channels, meaning the same advertise could be picked up twice by a listener.
From my understanding, the observer device only listens on one of the three frequencies at any given moment.
Could anybody help me how with more insight on this matter?