It sounds like you understand the difference between glide and legato, so one last time for the record, the Tempest only does glide. That's why the parameter is called "glide". It does not do legato. The legato functionality, despite being included in the original manual and operating system, never worked properly, was neglected for years, and was eventually removed from the U.I. altogether to avoid confusion. Though, evidently, that hasn't worked —ahem!
At any rate, this was all explained, for the umpteenth time, in this very thread, which is all of ten posts long. Read, folks, for the love of music, read...
I should probably stop answering questions around here (smirk).
Cheers!