Its nt awaiting to give pass to RJPB Raj but clearance to proceed...as bth train enters from different side & bth Up/DN tracks been dedicated towards GZB/NZM side...
Even the entry isnt criss cross as PF allocation @ NDLS dnt require them to merge at junction tht way...
Further, Raj entered via GZB UP line while TN was @ NZM UP track...and there doesnt exist any chance of await just @ Shivaji Bridge while train often awaits there as it serve as NDLS outer!!!