The reason is clear to me, since (for me) jhana simply means meditation.
I've included this in my book on jhana and
samadhi. It's still growing as more evidences and
ideas to connect them come up. I hope I don't spend my whole life on this!
Frank K wrote thus at 08:11 AM 22-12-12:
>Dear Pali friends,
>
>This part is interesting.
>I'm reading B.Bodhi's new AN translations book right now.
>
>from AN 1.382 to AN 1.554, it seems to qualify many activities as being
>"jhÄna",
>for example, AN 1.382 - AN 1.393
<snip>