In some cases yes. Not the majority. There are multiple centres scheduling things, background checks are not only dependent on the Canadian government so some may be delayed much longer than others, sometimes the Tribunal staff gets sick and needs to reschedule, etc. Expedited cases may get prioritized in some cases. People are also arriving in many ways and in many cities. Don't worry about it too much they try to keep it as fair as possible but if you create a list people may start expecting their case will be soon if someone arrives the day before them. That may not be the case. Every case is different and each case doesn't require the same amount of time to process.