I don't have the same model as you, but do have the outdoor kitchen/grill.
I have a quick connect at the rear bumper for a bumper mount barbecue and another quick connect on the frame directly below the grill. The hose runs on the outside of the slide from the quick connect on the frame to the quick connect on the bottom/rear of the grill.
I will take a picture and post shortly.
Rob & Marta Potter
2018 Jayco Eagle 336FBOK
2017 Ram 3500 CC SRW 6.4 Hemi 4.10 Curt Q20