I have made a booking for 2 by 12302 in 2A for journey between NDLS and HWH in October. I had opted for one UPPER and one LOWER berth choice. Finally I got allotted coach A4 45 LOWER & A4 46 UPPER. Is this correct??? Can anybody comment and clarify to me please? In my calculation 43, 44 should be respectively Lower & Upper and 45 & 46 SL & SU respectively and the end of coach. I'm confused. Plsease explain the berth layout arrangement...