And here is another one . . . Audio Technica ANC40BT in ear bluteooth NC's which support two phones via BT.Use them daily whilst driving listening to music via one phone and receive calls from both.Have used them "wired" on long haul as I didn"t bother sourcing a BT transmitter and they Work a Tr...

Adding to Les W comments there are cultural parallels with KL plus they need a city with decent "critical mass" for pax numbers both ways.