Central excise dealer query

I am confused at following transaction.  Require your guidance.

Company A is a manufacturer who supplies Raw material to company B, also a manufacturer. 
Company B sends some raw material to the jobworker’s premises directly from company A [Rule 4(5)(a)] and takes cenvat credit only after the material received in its premises after jobwork. This is to save the transportation cost.  The jobwork process may/may not amounts to manufacture.

- process is total wrong, B can not send the materials to any job worker on account of A, instead A has to take delivery from B's premises then shift the same to any job worker on challan of A only.

Now as some business strategy this arrangement is changed as under.
- Company A will supply raw material to company X “An Excise Registered Dealer”.
- Company “X” will then supply this material to company “B” on its Dealer Invoice.
This is basic and routine arrangement.

- company X is dealer or job worker? as dealer invoice is for purely depot or trader, not for job worker. a job worker has to return the goods after job work to principal on the basis of original challan received from principal.

But how the material can go directly from company “A” to some jobworker and then sent to company “X” a registered dealer and then it can be finally supplied to company “B”. 
Can “X”- the dealer, instruct “A” to put jobworker’s name & address as consignee and when material come after jobwork to “X”, he can enter it in its RG23D register and make invoice to company “B” ???

- RG23D register is meant for depot/trader, not for trader. 

Is registered dealer allowed to send any material to jobworker for the process which does not amount to manufacture ??

- No, he can not send it by own, but he has to show delivery to buyer, and buyer( manufacturer) only is entitled to send it to job worker.