[Ned]

As far as I've been able to determine, the two "bebop scales" derive from David Baker's instructional material, and, yes, as implemented, these are not really scales, that is to say, harmonic entities, but merely examples of chromatic embellishment typical of bebop--and many more such examples are possible. As it happens, however, (not as implemented) one of Baker's so-called "bebop scales" is really a Pythagorean octatonic and the other a demi-diminished, both of which requiring a tonal center different from those posited by Baker. In other words, these two scales comprise the same pitches as Baker's "bebop scales", but the resemblance is fortuitous. To put it more crudely, there isn't such a thing as a "bebop" scale.