That is similar to what I saw in Milano Italy last year at a bus terminal.
If TTC and other systems are only looking at charging buses at the garage, going to be a lot of dead heading compare to having on route charging as well.
Most systems I saw last year had on route charging at the end of the route or the main bus terminal that were charge overhead. A few had the plug in that can only be done at the garage that used them for 40' buses. All 60 and a lot of 40's buses used the overhead charging by a number of different charging systems.
Even going back as far as 2014 when I saw my first ebus, it charging station was on the route at the ends using overhead charging.