4-6 is hot, they are tired and looking forward to going home.
Probably as soon as they can get out of your house!
nope, it's the worst slot 'cos 90% of engineers will be knocked off by 4pm at the moment. that gives you the choice of backshift guys or the weirdo's that do overtime......that in turn means you have higher chance of being bumped after 4pm if the workload is high.
Well, its in their interest to sort it as im just going to keep calling them back until they do!