Patna, Jan. 19 -- Even before the Rashtriya Janata Dal and the Congress starts talk on seat sharing in Bihar ahead of the Lok Sabha polls, differences have emerged over the formula they should follow in seat allocation. While the RJD proposed one Lok Sabha seat for every six assembly seats contested in 2015, the Congress wants a bigger share because the Janata Dal (United), or JD (U), is not part of the alliance any more....