The first job took 15 hours 41 minutes 53 seconds, the second 1 minute 25 seconds, the third 21 seconds. This makes it quite tricky to calculate the duration in a suitable datatype. In T-SQL people use scripts like the following from MSSQLTips.com
((run_duration/10000*3600 + (run_duration/100)%100*60 + run_duration%100 + 31 ) / 60) as ‘RunDurationMinutes’
I wish that some version of SQL Server would fix this “clever” duration. We’ve had the time datatype since 2008; at least add a new column with run duration as a time value if you’re that concerned with backwards compatibility.