due to to rule 4. (as in my previous comment) the result is moot (legato2a.png); iow. it does nothing, because ALL notes overlap each other;
when you set duration to 0.0.000 you're actually making ALL notes to have a ZERO duration first and so they won't overlap each other BEFORE the legato effect is applied; so all is working as it's intended and thus gives you the result you end up with (legato3a.png). thanks.
please start with an example where there are no overlapping notes, at least having some just partially and not totally as in your example.
due to to rule 4. (as in my previous comment) the result is moot (legato2a.png); iow. it does nothing, because ALL notes overlap each other;
when you set duration to 0.0.000 you're actually making ALL notes to have a ZERO duration first and so they won't overlap each other BEFORE the legato effect is applied; so all is working as it's intended and thus gives you the result you end up with (legato3a.png). thanks.
please start with an example where there are no overlapping notes, at least having some just partially and not totally as in your example.
hyu.