My wild guess is RSA between 12251/52 Wainganga Express and 12253/54 Anga Express( if I remember correctly, there used to be RSA between them prior to Terminal change of 12253/54 to SMVB).
12252 JCO 27.07.2023 reached YPR at 13:50 hrs on 29.07.2023( delayed by 24 hrs 20 min). But, 12251 JCO 28.07.2023 departed RT from YPR.