Four and a half hours ! ! ! That's outrageous. I conclude that there are three possibilities that have caused this extended retirement:
(a) The board are on rates and are milking another 24hrs.
(b) The board is drawn from branches that have no conception of RIS, RAS, VFR, IFR, QNH, RPS...etc. and are lost in the plot.
(c) they're too embarrassed to show their faces.
Keep going Spot, nearly there.