ORD is already less than desirable for international-to-domestic connections; this doesn't make things any better!
Wait until this happens at EWR. And that one will be down for a lot more than nine months and will cut off connection to rail also!
The EWR AirTrain is so bad that busing, in some cases, might even be faster. It is, without question, the worst primary* APM system at an airport I have ever used.
*= yes, I am familiar with the "creepy little IAH train", but it's essentially useless these days... does it even run anymore?