Champaran HumSafar Express : इन अजनबी सी राहों में, जो तू मेरा हमसफ़र हो जाये, बीत जाए पल भर में ये वक़्त, और हसीन सफ़र हो जाये. - Piyush Singh

Yes it differs. Once i was travelling in Mumbai nagpur duronto and i have got upper birth , lower birth was occupied by TTE. That time i noticed 3 times the TTE went somewhere and came with smell of ciagarette.
Another incident while travelling in mumbai hyderabad express. The train was packed that day and though 90 % passengers in our coach were Ck passengers a lot of people came into our coach and 3-4 beggers started to smoke near Bathrooms. TTE came and said nothing to them. In seats near bathroom there were lady passengers travelling with family and complaining. But TTE did nothing.

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