Jetavia, as a matter of interest in the USA timing is based on the inbound leg and not the outbound as the rest of the world. However as I see it normally a leg distance can be given, or requested to avoid all the turning of a standard holding pattern which would be 1.5 minutes at FL250.
In this case if we had turned inbound at 15nm, our outbound leg would have been only 46sec with the prevailling winds. This is more restrictive than the standard 1.5 min, and I don't think this was the intention of ATC.
However I may be misinterperiting the request