Duration: 2:15:44

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1

Milliseconds: ( 46 + 91 = 137 ) milliseconds (Since 1000 milliseconds = 1 second, we have 137 milliseconds = 0 seconds and 137 milliseconds)

Seconds: ( 19 + 55 = 74 ) seconds (Since 60 seconds = 1 minute, we have 74 seconds = 1 minute and 14 seconds)

Minutes: ( 13 + 1 = 14 ) minutes (from the conversion of seconds)

Hours: 2 hours (no change)

So, the total time after addition is:

2 hours, 14 minutes, 14 seconds, and 137 milliseconds.