Amravati Exp do share slot with other SF just like Shalimar TVC which share slot with other SF but wasnt SF earlier!!
U gonna find immense exaple where SF & M/E share slot & that slot makes the train run with high AVG!!
15902 share Kaziranga SF slot in between HWH-YPR, 18637 with 12835 (Non SF faster thn SF), BGP-LTT & GHY-LTT, Saket & BSB-LTT SF (ET-LTT Stretch) & many more!!!