Kolkata - Agartala Vande Bharat Exp via Dhaka, aage waale samay mein. Lagbhag ~500kms ek taraf.

There's probably no train running like that. First of all, the condition of the tracks in Bangladesh is bad. On top of that, there are a lot of radicals in that country. You never know when and where someone might sabotage it, there's no trust.

It's not a big deal, man. In our country, the railways are troubled by stone pelting. Don't know what will happen in other countries.