Recovering iPhone notes from an iCloud backup?

Mjfinnegan wrote:

I recently upgraded from an iPhone X to 13 Pro, which involved making a backup on iCloud and transferring the data. I've since wiped and returned the X, but I still have the backup saved.

Shortly after setting up my new iPhone, I unwittingly deleted one of the email addresses I had saved on it, which also deleted all its corresponding notes. It's a third party email from a now-defunct account, so I can't simply log back into it the normal way. I've essentially got three questions:

Is it possible to extract the data of the notes from the old backup?

If I were to restore the old backup to my 13 Pro, would my email & notes be restored?

I also have an old iPad that I haven't used in like a year. If I dug it up, charged it, and logged back in, would I still be able to access the email and notes (up to when they were last synced with my phone) on that?

Note aren't part of the icloud backup, because they were synced to the email account you deleted.