Pf 6 and 7 are not at all connected to DEE .. No train can go to dee from these two pfs . So thats y the pf which comes under dee are 5 only and 6 and 7 comes under Vivekanand Puri Halt . It has its own ticket counter .
Plus both stations are seperated from each other by walls .
For reference see the pic ; Red side is DEE then its pitlines , yard then there is wall and then Vivekanand Puri halt (yellow side)
also...
more... DEE lies on DLI - DEC line
VVKP lies on DLI - ROHTAK line
and to faciliate ppl from dee side , the FOB is provided .