This if for the BCBAs out there

This if for the BCBAs out there! Please help me because I am stumped.

How would you 1. operational defining a student asking to go to the bathroom (so it’s appropriate), but then they stay in the bathroom to long (avoid task work) and 2. what would you call this behavior?

Is it elopement even though they asked to go? Is it non-compliance because they are doing it to get out of work? I’m at a loss!

Thank you!!