Hours after BJP president Amit Shah and Janata Dal(United) chief Nitish Kumar announced a 50-50 seat-sharing formula in Bihar for the Lok Sabha elections, Upendra Kushwaha -- president of alliance partner Rashtriya Lok Samta Party -- met opposition Rashtriya Janata Dal (RJD) leader Tejashwi Yadav in Arwal district today. The interaction triggered speculations of discontent in the state's National Democratic Alliance (NDA) grouping.