Video would have been better to prove whether Lichchvi Overtook SK or not as i have doubts regarding this Overtake or if Lichchvi Overtook SK there then SK must have overtaken Lichchvi ahead as:-
On that day Lichchvi Arrived ANVT at 08:05 and SK Arrived New Delhi At 08:15 and a train can't reach New Delhi from ANVT in only 10 mins.
Also Lichchvi is standing on 3rd line whereas SK is on middle track and as far as i have seen trains on middle track overtake trains on 3rd track towards Delhi.