Use Case: Generate a random number/date/datetime between two values which are on the parent record

[DougMidgley]

Hello Team,
I'm looking at a use case related to timesheets, but it could apply to things like contracts/orders also.
I would like to generate a random time entry between the start and end of a timesheet window. In an ideal world this window would also be random.

I can generate a random datetime on both, and I can generate between two dates on both, but I would need these items to be linked.

Checking the documentation, it doesnt seem like this would be supported standard, but would be great if you can tell me I'm mistaken :)