Atik Yomin is clothed in Arich Anpin; Atzilut is under Adam Kadmon.
The full causal chain: radla → Mitkala → AK Yesod-Malchut → Atik → A"A → Atzilut. Atik clothes in A"A; Atzilut sits under AK.
Op. 96 opens the Atik and A"A link Atzilut with Adam Kadmon unit (Op. 96–100) by stating the full causal chain. After the radla unit and the A"A unit, Op. 96 finally specifies the entire chain by which AK governs operational Atzilut. Every later operational claim presupposes Op. 96's framework.
The chain has six structural levels.
radla — the Unknown Head; structurally unspecifiable; the upstream concealed root.
Mitkala — the matkela balance, the joining of MaH (gematria 45) and BaN (gematria 52) at the AK level; the structural-operational form of radla's downward radiation.
AK Yesod-Malchut — the cosmogonic Yesod-Malchut couple of Adam Kadmon (Op. 60); where MaH (under Yesod) joins BaN (under Malchut) operationally.
Atik — Malchut of AK clothed in Atzilut (Op. 74); the structural-functional bridge through which AK's governance enters Atzilut.
A"A — the operational root of Atzilut (Op. 90); receives Atik clothed in it.
Atzilut — the cosmic level at which the named-Partzuf walk operates. Atzilut sits under AK in the sense that AK's governance, transmitted through the chain, reaches Atzilut at the operational level.
Atik clothed in A"A is structurally crucial. The clothing-relation Op. 29 introduced (the Line shines through a garb) operates here at the cross-Partzuf level. Atik does not replace A"A's interior; Atik occupies it as an inner reality, transmitting AK's governance into A"A's operational form.
Op. 97–100 will unfold this chain operationally. Op. 109 will name the general rule (chain + clothing) that operates throughout the chain. The closing chapters operate inside this framework.