แม้แต่เด็กไทยที่เกิดที่นี้ ยังปฏิบัติได้ดีกว่าผม

If you do it consistently all day long even after the retreat... you should experience some changes in your concentration (Samathi).

I think that's what they mean sandithiko, akaliko, ehipasiko.

Good luck with it and I am happy to see you go to see Luong Por Direk in November.

He told me to go stay with him for three months... so I can get the right concentration before exploring other teachers.  As too many teachers, make me lose the continuity of studying the body.  (Body, Vedana (feeling), Jit, Dhamma).  :^P  Once you get one, you get it all or so they say.