The WLS talk is just so she can think she has a trump card to deal with her fatalistic gorging. She is not putting any wheels in motion for it to happen, she does not know anything about it, and she would not lose any weight prior. She would need to fast for two weeks on essentially a liquid diet, which wouldn't happen in ten thousand years (gravy is not a sanctioned liquid). It is not completely impossible for this to happen, but it is so unlikely it can be regarded as such. It's just another facet of her delusions she can hold onto so she doesn't have to confront the fact that she's going to be dead before she's 40, which she is.
What's more, she'll be dead before 40 even WITH surgery. Tinkering with her stomach is not going to somehow alter the fact that she's a psychotic gluttonous freak. Most megafatties who get WLS are simply emotionally dependent on food; they're not clinically insane narc ditchpigs who can't stick to something for HALF A DAY. If Chantal got WLS, she would just eat around it - it can be done, and sometimes is, in cases such as hers. For this reason, and for the negligible likelihood of it even happening, prolonged speculation on WLS is pointless. Chantal thinks talking about things makes them magically happen, but WLS absolutely will not. I think she's legitimately too crazy to make anything like that happen, at this point.
ETA: the OP is going to need more text, because after this surgery, she's really gone absolutely fucking crackers. She was nutty before, we've been saying so for years, but now we see that before, she was just delusional and eccentric. Her health is at crisis point, and when she should be making her greatest efforts at reinvention at weight loss, she's eating 5000 calorie meals at 5 in the morning and sharting on camera. Can we even pity her?