Is s'chach on multiple irregular levels (some higher, some lower) valid?

SukkotS'chach

Synopsis

Uneven s'chach with parts on different levels is valid provided the gap between levels is less than 3 tefachim, or if the upper level is 1+ tefach wide (can be 'lowered' conceptually).

Early Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

Discussion coming soon.

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