Viewing shared note with iMessage question

My manager shared a note on iMessage with me. So I click it says verify this number so I do, then I get this text saying to add phone number to my Apple ID with a link to iCloud. And yes it was my managers number and yes it’s actually the Notes app being shared. I clicked the text link eventually and it opens the shared note. With a email from Apple saying changes have been made to phone numbers. Of course when I log into iCloud.com no changes have been made. I do have 2 step verification on.

Could this just be some programs interfering with each other cause the only thing that was added was a group note. I unfortunately can’t verify with someone else at the moment if this is the normal process for sharing a note on iOS 14.2 at the moment so I’m asking here if it’s normal.