Imagine the factor overlooked is the nasty but nutritional hospital food they got when receiving the transplant (assuming they got hospitalized).
Maybe I'm misinterpreting what the process of that daily transplant looked like, but I expect they ate a not insignificant amount of hospital food if there were 7-8 weeks of daily treatments.
This isn't a hospital procedure like an organ transplant. It's material placed into the recipients colon through an enema, nasogastric tube or possibly even just taking some pills.
So it might range from done at home to done during a 30 minute visit to a clinic.