If it's a 2 hour presentation, then the normal consultancy format is as follows:
First 5 mins - Senior partner waffles on about the firm
Second 5 mins - Senior partner goes through "housekeeping" and where the loos are, make sure you turn off phones, etc and builds an excellent rapport with the audience
Next 5 mins - Senior partner summarises all the exciting points and gives the presentation in 5 mins in an exciting and engaging format
Next 1 hour 45 mins - Junior consultant is left to deliver the same 5 minute presentation but to take 1 hour 45 minutes doing it. Typically at this point some roadworks will start up outside and the catering people will come in to start noisily clearing the cups of tea and biscuits away. A few people, now with bladders full of tea and coffee from the pre-meeting mingle, will also decide they need to use the loo, so that it looks like a mass exodus.
Then, after the presentation, feedback forms are issued with questions such as "On a scale of 1 to 5, 1 being terrible and 5 being below average, how would you rate little Johnny's presentation?"