These analyses always seem incomplete to me. You need a whole second plane, and that plane needs to take off and land, and carry and elevate significant extra f

These analyses always seem incomplete to me. You need a whole second plane, and that plane needs to take off and land, and carry and elevate significant extra fuel during its takeoff. I feel like the fuel economy savings are probably technically there because of the different aircraft characteristics, but again, you need to circuit an entire second plane and crew to “save” that fuel. I’m sure someone’s done the analysis.