This train & all other trains from NFR to South were introduced when Dankuni Andul chord was not constructed. All trains had to go Howrah & undergo a Reversal then only they could go to Kharagpur, Vijayawada.
After Dankuni Andul chord all trains except Paharia exp & Puri KYQ EXP via Hwh started using that route as the Reversal problem was over.

So,...
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how can Katwa Azimganj get trains to South without reversal at Howrah?
Ans:- To start this , let's see the Junction railway stations in New Farakka , Bandel Route
1. New Farakka Jn(NFK)- Junction point of Bhagalpur, Rampurhat, Azimganj to Malda Town. ( Bypass - ✅)

2. Azimganj Jn(AZ)- Junction point of Murshidabad jn, Nalhati jn , Katwa jn. ( Bypass-✅)

3. Katwa Jn(KWAE)- Junction point of Bardhaman jn, Ahmedpur jn & Bandel Jn ( Bypass- ❌)

4. Bandel Jn - Junction point of Naihati, Katwa along with Howrah Bardhaman Main line ( Bypass-❌)

So how can trains reach Dankuni Andul Chord section from these stations? Let's find out.

1. Azimganj Nalhati Rampurhat route- While advancing from New Farakka towards Azimganj, Trains can Bypass Azimganj & move towards Nalhati, Rampurhat.
Only Jangipur Road can have the benefit as it will not touch the other imp stations AZ, KWAE.
If a train can move towards RPH from NFK in 1.5 hrs then why will trains take a longer route if they have to go to RPH from NFK?

2. Katwa Bardhaman route- For this there has to be Loco Reversal at Katwa jn for going towards Bardhaman. After that trains can go towards Dankuni from Bardhaman. This one can be beneficial

3. Katwa Bandel Bardhaman route - It is irrevelant as it is possible to reach BWN from Katwa only .

So what's the conclusion then?
Ans:- The final result is utilising Katwa BWN route. In order to fully utilize & run M/EXP , SF trains lots of upgradation has to be done. Like speeding up of the route, Doubling & constructing a Bypass cabin at Katwa ,Expansion Pitlines at Azimganj to 22 coaches So people of AZ,KWAE people should demand for a Katwa Bypass if they want to see South bound trains running in their route .