Distributor transaction retention explanation of ‘at least’ and ‘but no more than’

Good evening,

I missing something to completely understand the subject mechanism.

Let’s say that we set ‘at least’ = 2min and ‘But not more than’ = 10min. The Distribution clean up: distributionjob runs and deletes any logs that are older than 10min. What was the contribution of the ‘at least’ value? 2min old logs would not be touched anyway since it’s only truncating logs older than 10 min.

Many thanks,

Archie