As India prepares for Flipkart's Big Billion Days, the brand has taken the shopping festival to the streets of Kolkata with 'Kothaye Jaabe Dada?', an activation that taps into the city's familiarity with the term "BBD" and gives it a new festive meaning. Turning BBD Bagh into a Big Billion Days Connection The campaign draws on the cultural familiarity of BBD Bagh, formerly known as Dalhousie Square, a prominent Kolkata hub featured across several city bus routes. Flipkart has brought its Big Billion Days messaging onto selected buses travelling to and through BBD Bagh, connecting an everyday element of Kolkata's public transport culture with the country's major shopping festival. Big Billion Days on Buses and Tickets The activation extends across buses and their tickets, turning regular commuting touchpoints into opportunities for passengers to discover the sale. Bus tickets feature Big Billion Days offers and QR codes, allowing passengers to scan…