I am flying from Columbus to Singapore this weekend. To get there, I go CMH to MSP and then to SIN. I logged into my Delta account just to make sure nothing changed, and I now just realized that they we are stopping in Tokyo and I have a warning that I am going to miss my connection from NRT to SIN. How is that the case since I booked my MSP to SIN with no issue. Do they really make us board another plane, or is it just to refuel our bird?