Each service you get can take between 30 mins to an hour.
Factors can change the timescale. If clients are late, it can create a delay for the whole day. Meaning everyone gets messed about and having to wait longer. Which is why we can’t always sit clients if they are late for appointments.
Clients who change their minds halfway through a cut can delay the students. And yes it does happen more often than you’d think!
Students are learning. So they will be slower than an experienced barber. Plus they may have to do assessments as part of their course which can add time to your appointment.
But in a general day you’ll be in and out quickly.