I dont think Indra Sengupta is a bong.....he does not even know that Dalmia is a Marwari.....Northies would know that, so would Ghatis, the only people who wont know this elementary info would be someone south of the plains.....so its a Mallu or a Kanaldigger or a Tamil brother or a Telugoo guy....hahaha.....chor kay daree may tinkaa...or wait...it could be a Bihari/UP brother, they are jealous of the Bongs, because the entire Bihar/Jharkhand/UP state survives by labouring in Bangali markets and bazaars.....kya dtection hai baaap...