References – AN 4.179: Extinguishment 
“In the dialogue between Ānanda and Sariputta (AN 4.179), could you say more about the reason people don’t become enlightened in this lifetime?” Answered by Ajahn Pasanno. [Stages of awakening] // [Perception] [Conditionality] [Progress of insight]
Madison Insight Retreat 2023, Session 1, Excerpt 1
Readings by Ajahn Pasanno:
The Island by Ajahn Pasanno and Ajahn Amaro, Chapter 13, pp. 224-225:
Suttas: AN 4.179; AN 10.60; AN 1.494.
Sutta: MN 26.22-42: Ariyapariyesanā Sutta.