AN 4.233 what exactly is the relation between kamma, saṅkhārā?

AN 4.233 sutta passage here, in Pali, with my translation into English: https://notesonthedhamma.blogspot.com/2019/08/an-4233-what-exactly-is-relation.html questions: 1. what exactly are those 3 sankharas (bodily, voice, mind)? If they're the same ones from MN 44, it would be strange that in breath and out breath would cause karmic consequence, or if unvocalized thoughts (vitakka & vicara) cause the same karma as vaci-carena (vocal conduct). 2. is citta sankhara the same as mano-sankhara? 3. looking at bodhi's translation, what is actually being 'performed' (abhi-sankharoti)? Is the bodily-volitional-activity mean he just sets an intention to do a bodily action, such as hit someone. Or he actualizes the intention to hit someone, and actually hits someone? Now the fact that the sutta shows kamma being done, being reborn in hell, must mean it wasn't just a volition or intention to do harm, he actually did harm with the body. But the pali abhi-san-kharoti, and kaya-sankhara, it's hard to actually read and understand what is happening.