No even in down it has been. But as I said, frequently it is there except some lucky days like your case. I just 2 days back came by 12314 and while it covered MGS-DOS in 1 hr 10 mins, immediately after crossing DOS bridge, speed got reduced and it took almost 1.5 hrs to reach Gaya from there creating around 30 mins delay. I checked status of all trains, even 12440 ahead reached gaya 40 mins late that day and all up trains had also got delayed in covering that section.
If you check the running histories, even yesterday this TSR was there.