Petzl connection ring sizes

[Clinton_Baptiste]

I'm using a Sequoia harness with 2 bridges and I want to fit a connection ring on each one. The bridge that came on the harness is a size 'M' (45cm), about 10 or 11mm thick so I just added another one the same to match it as it seemed fine when I climbed on it. Petzl connection rings come in size S (28mm internal diameter) or L (46mm internal diameter), but I can't find it stated anywhere which size ring would be best to use on those bridges.
 

By my reckoning the small ring ought to be big enough to accomodate the thickness of the bridge itself plus the thickness of a karabiner with a few mm to spare, so is that the one to go for? Or am I missing other potential uses for which I'd need the extra internal diameter of the bigger ring(s)?