I think that’s closest to how I say it. There’s a regional Italian chain in the area where I live and their signature item is a sandwich with this name. Everyone I know says it as you’ve described.
Might correlate with where someone grew up. East coast, midwest or west coast. I see the same difference in how people pronounce the word 'OFTEN'. Silent T or not?
We do a little bit, though not as much as I find you have in the US. The biggest difference you will find is if you meet someone with a Newfie accent (from Newfoundland) or a québécois accent. But, for example, you will never hear anyone say about as a-boot that was raised on the west coast, but I’ve heard it said in the maritimes (Newfoundland mostly). You also don’t get many people who throw in ‘eh’ who were raised in BC, but I have heard it more commonly in other provinces. And we have a joke in Vancouver that you can tell someone is from Toronto by the way they say Toronto. We say Tor-on-toe, very pronounced, where they kind of mush it together into Tor-ahn-ah.
I have always pronounced it GON-doe-lah (emphasis on 1st syllable, but long o in middle syllable). So, first syllable short o, 2nd long o. And then laaaaa.