Third Party Transactions E Way Bill

Mr. A - West Bengal - Supplier    Mr. B - Bihar - Buyer    Mr. C - UP - Consumer

Buyer Mr. B - Bihar  Directed to Supplier Mr A - West Bengal  To Supply Goods to His Consumer Mr. C - UP

Question: as per above scenario 

1)  Its Mandatory to Generate E Way Bill by Supplier Mr. A  ( Bill to Ship to ) and 

      Buyer Mr. B ( Bill From Despatched From )  -  Both  ???

2) E Way Bill To Generate Same Date for Both ???

3) Two Nos. E Way Bill with Different Values ( Supplier and Buyer ) Will Carry by Truck Driver for 

    same goods --- Can any  Confusion will be Raised  on Road ??

Please reply above mentioned 3 Nos Questions

Thanks