Trying to understand combined weight limits in Ontario

I understand where to get the weight ratings & tow ratings for my truck. I also understand where to find the gross weight ratings of the trailer.
I did call MTO & the person on the phone wasn't exactly clear either.
Class G license in Ontario can tow a 5th wheel provided the combined weight of the vehicle & 5th wheel don't exceed 11,000kg.
What I was asking is if I take my truck & trailer to a Cat scale & combined I'm below 11,000 kg would I be legal in Ontario regardless of gross weight rating of 5th wheel?