I'm going out on a low, sturdy limb here: They are not together. Why? Because we've not seen them. Save for the lying low post #kimexposedtaylorparty, if they've been together, we've gotten pics. Even when they came back from Oz on the private jet, we got pap pics and hand holding at the private airport! At this point, no pictures = not together.
Were they together? Maybe. If she were on the plane that made the RI-CA-RI trip, then perhaps they had a few hours together. Up thread someone said it arrived late Fri and took off Sat afternoon. That's a wide enough window for some 'alone time.' But these two so rarely have alone time. Remember when we thought they were at Hillstones having quiet time (actual pic from a camera phone!), but then there was the article...and the pap pics and the sponsored tweets. Every bit of their 'alone/private time' has been bracketed by staged pap pics, professional photographer pics or articles.