Good grief, in my day I was able to price and store a RTW within 20-40 minutes, depending on complexity (and no simultaneous changes!). We aimed to turn them around quickly because of all the unticketed space we were holding. It helped that NYC/JAX had sales agents who were at least semi-trained in RTWs before it got to my Rates Desk team.
There are several fares agents in MAN, and the tariff gentleman who publishes the RTW fare rules sits right with them! What is going on??