I know that both the T2 or T3 (City Circle via Granville from Liverpool) including T6 (City Circle via Regents Park from Bankstown) line are a joke when it comes to daily commute from home to work or school (both ways) as it stops at like almost every single station adding travel time, it sums up to around 65 minutes if lucky but can be longer hence why often the T8 (Airport & East Hills from Glenfield) line is better if you live within that area.