I am writing as a family member. My FIL is wrapping up his radiation and chemo treatments soon - only 6 more to go, yay! As far as I know, his journey seems to have gone the way the doctors predicted it would. They said he may need a feeding tube - he thought he wouldn't..but he did. They said he could lose his sense of taste and he did.
It's strange. We hear how things are expected to go, and you don't think they could be as bad, but then they get bad. And it's still surprising, somehow. Even though it shouldn't be a surprise. I know I'm rambling. The only real surprise is that I am pretty certain that we had expected only radiation after the chemo. But he has been getting weekly chemo along with the radiation. But he stayed on chemo and radiation generally as expected.
This is just my perspective as a long-distance family member.