Procedural Sedation – Fentanyl and Midazolam Concurrently

I am hoping to clarify that the administration of Fentanyl and Midazolam, for the intention of procedural sedation, are to be administered concurrently as stated in the medical directive and companion document. My understanding of this is to administer one of them in a single IV catheter, flush the catheter, administer the second medication immediately and flush the catheter. Or are we cannulating two IV catheters and administering them simultaneously. Finally, I am assuming we are absolutely not mixing the two medications in the same syringe.