The Legato Overlap function ensures that all your MIDI notes overlap so that legato passages play correctly in your VST.

By default, a gentle time value of up to 100 ms is applied for gaps.

You can increase this up to 3 seconds to even connect individual staccato notes and hear how they would sound in legato. In that case, make sure to turn off Legato Overlap during the last note of the phrase, otherwise it may be played noticeably too long. Restart playback after changes.