In certain circumstances, your parish priest does have the faculty/ability/authority to confirm you. And, if you fail to meet those, he can apply to the bishop to get permission. And, even if he was in error about something and was supposed to ask the bishop and didn’t, if the error falls within certain parameters, the authority would have been supplied anyway, according to canon law.
Since you were baptized Catholic, but were in another Christian group for awhile, you could fall into a category that is automatically covered, but you might not. It depends on how you got to be Episcopalian, as crazy as that sounds. If your parish priest did his job, he took all of that into account, and he also took into account what his bishop wants.
If it concerns you, go talk to your priest and ask him under what precise category he thought he had the ability to confirm. He might have just given a short explanation to you, one he thought you would understand, but that wasn’t really as descriptive as it ought to have been. Parish priests have to confirm people every year, so it seems very probable that they get this right, overall.
Oh, if you were in danger of death at the time, he had the authority, also. Even if you recovered, it would still be valid. I don’t typically think of my 59 year old friends as dying, though. They seem quite alive and kicking to me.