Okay, so, another minor stick in the spokes comes during DS9
, when Bashir mentions that O'Brien went to Starfleet Academy at some point. Memory Alpha mentions that Ronald D. Moore openly admits this is a mistake, but says you can choose to rationalize it in that the enlisted training programs take place at Starfleet Academy, which apparently is also backed up by statements in TNG's
"The Drumhead." I can buy that.