Formula for Timeline duration

I have a Timeline column. When I mouse hover over it, it shows the duration in days.

I want a Formula column that shows this duration in months.

How can I reference the Start and End date in the Timeline, within my Formula column, to do this?


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Any luck here? I need the day count to populate so that I can automate per diem rates.

Nope! I haven’t worked it out, and silence on here.

have the same problem