Scotiabank Passport Visa- actual rate

They advertise this card as having no foreign exchange fee so I’ve been using it for all of my travel costs when they are non-Canadian currency assuming I was saving a little. But realized I’m maybe not saving anything!

My friend and I both bought tickets for a trip at the exact same time yesterday in USD. She was using an RBC Westjet MC, I used my Scotiabank Passport Visa. When we checked the CDN charge that came through, hers was about a dollar cheaper than mine. Are they baking the lack of foreign exchange fee into the base rate?

UPDATE: I believe the answer to my issue is that my friend's charge is going to go higher once it posts. I checked the Visa exchange calculator and my price was exact with their conversion with no fee on that date.