In the explanation of the Purāṇa and Nava Kamma stages, it was stated:
The mind of a puthujjana automatically attaches to the sensory input and generates sankappa with “mano (abhi)saṅkhāra” in the immediate second stage of ajjhatta viññāṇa.
When strong kamma accumulation occurs consciously with speech and bodily actions involving mano, vaci, and kāya (abhi)saṅkhāra. The kammic energy generated in this stage can bring future rebirths (the nava kamma stage).
“Weak kamma accumulation” in the “purāṇa kamma” stage is automatic, and the “strong kamma accumulation” in the “nava kamma” stage happens consciously (while we are aware).
Looking at the chart from the post you recently shared, I still don’t fully understand it.
Does mano saṅkhāra operate in both the purāṇa kamma and nava kamma stages?
Also, if mano saṅkhāra arises consciously, then why is it that the “attachment” to something stops at the vaci saṅkhāra stage rather than at the mano saṅkhāra stage?