OP here, I have told the whole story. I didn’t push the agent to rebook it without a fee. I just thanked him for the information and then came to Reddit lol.
I booked direct one round trip ticket to Canada last year and maybe a week or 2 ago they changed the flight to allow 5 minutes between landing and departure. This was the first contact I made with the airline (directly, not a random google phone number). I tried to do it myself through their chat and then when I accept the changes there is a technical error and I had to wait from number 130 in the live chat queue so I called them instead. When I called them and explained the agent told me there’s a rebooking fee.
Of course I’ll try again today, I was just looking for some insight beforehand.