[mgkimsal]

Not the OP, but one of the teams I'm on uses fib somewhat differently.

Any point with 1-2 is estimated at < 1 day. Some are literally 20 minute fixes, but ... you don't always know that up front, you just generally know it may be pretty small. 2 might sometimes go up to a day.

A 3 is assumed to be a day or two.

A 5 is assumed to be 3-4 days.

An 8 would be 1-2 weeks.

Anything higher is backlogged until it's broken down into smaller segments.

Not sure how well that compares to usages by other teams, but that's one data point for your question.