Taking the bus from the AKL to the TTC and then waiting for and riding the monorail to Epcot will take a great deal more time than just taking the bus straight to Epcot.
And I don't think busses run to the TTC, anyway. I think you'd have to take the bus to the MK and then monorail yourself over to the TTC and transfer from the first monorail to the Epcot monorail.
If you're gung-ho to ride the monorail, by all means, have at it! Take the bus to Epcot and then ride the monorail over to the TTC and back! Just don't do it because you think it will save you time. It won't.