Merging sublists of a true/false list

I want to merge sublists of true/false to get a flatten list of it.

If one of the index is true, the merged index should be true.

Hello Gregor,

Below is one such approach on the proviso you are happy with how the list levels fall out:

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ji @Gregor_Warneke

you could do it like this

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cool…works for me…thank you @Mostafa_El_Ayoubi and @solamour

You can also use this node from SwingNode…
It’s no so cool than @Mostafa_El_Ayoubi proposal…

Another possible approach …