Skip Silver Line take Blue Line from Logan Terminal E international Arrivals to Boston South Station

The South Station is at downtown Boston; few minutes away from Boston Commons, Faneuil Hall, Chinatown, Seaport District, and of course Little Italy. You can either take one of the subways to reach those destinations from South Station or take a short walk. I myself prefer walking as part of sightseeing experience.
The convenience of taking Silver Line from any Logan international airport terminals to South Station is that it is a direct route. Since Silver Line is a shuttle bus service with no dedicated lane, you can get stuck in traffic making you missing the train you try to catch. In this video I show probably the most unusual route; Blue Line Airport station - State station to transfer to Orange Line - Downtown Crossing station to transfer to Red Line - South Station.
Please take the elevator when you can. Luggage is not meant to be carried. Doing it so while going downstairs or upstairs can be dangerous. Escalator may be appropriate on small cases though I make a habit to take escalator when travelling with luggage.

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Imagine doing this after an 8 hour flight, with a suitcase and backpack.

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Is it a better option to take Logan express to get to back bay?