I'll let someone else familiar with the 2460 answer those questions.
We have a cheap steel $40. BBQ with a disposable cylinder connector on the regulator. I don't like those cylinders for many reasons and bought a widely available 10 ft. adapter with a POL end to go on the coach's cylinders. It's a bit of a pain pulling off the cover and hooking in the extra hose, but what the hey, I'm camping, not a big deal. These little BBQs are fine for the two of us--4 at the most. It cooks just as well as my mega bucks SS cast iron burners etc. model at home and if I didn't need the extra cooking surface from time to time I would use el cheapo all the time, it is that good.
So far I have not bothered hooking up the RVQ type pipe at the side of the coach. RVQ BBQs are pretty expensive and don't have a regulator, using the coach's regulator to deliver low pressure gas. My brother hooked his up himself for a Weber BabyQ which also has a regulator and it works very well too. I'm no gas technician, but suppose once the gas is regulated at the main cylinders, running it through a second regulator on the BBQ does not reduce the pressure further?? I haven't seen that discussed anywhere though.
2019 F150 3.5L Max Tow
2015 Silverado 1500 NHT
2014 Arctic Fox 22G
2005 Sunline T-2499