My ac trunking start from the last room but router at living room, so not possible to go from ac trunking Liao.
I think no choice Liao, try my luck with flat cable and see how it goes Liao. Worse come to worst, I will find time nobody at home secretly hoot the walls with my trusty drill *wink wink*
Since the router is at the hall you need to run your own trunking along the walls (I suggest bottom side) till it reaches the aircon trunking then the job will be easier for you to run the LAN cables inside the aircon trunking
If you don't want to hack a hole in the wall then run your own trunking below side till it reaches the nearest room. See what's the gap below the door. The thinnest LAN cable is 6mm diameter. If it can go below then fiine.
If you have a 3-split unit aircon then the aircon trunking should cover the 3-rooms i.e. master room and the other 2 rooms.
Like this
Run own trunking from router to nearest room ===> Check gap below door ===> If gap is more than 6mm then run round LAN cable below door to the room.
From here run own trunking till it reaches aircon duct ===> then run LAN cables inside aircon duct to all the rooms
JFI
I just completed running my own trunking from the router at the far end of the hall to the nearest front room. The gap below the door is large so I ran round LAN cable below it. I did not use the aircon duct in the front room because my front room is the media room so the LAN cable terminates there.
As for the master room I'm using MoCA through the old TV antenna points i.e from the hall to the master room. So running to the back room is either below the 2mm gap door using flat cable or use round cable using the aircon duct from the master room to the back room.
Alternatively, since I'm using a 10Gbps switch, I could have run 3 LAN cables from the switch in the hall to the front room, back room and master room and this time I'll need to run inside the aircon duct. The part from the router to the front room will still need to run own trunking