Hello,
I am not sure how it should work. If you want to design the repeter like you mentioned, you can design the transformation of external repeater like:
<table>
<tr>
<cms:CMSRepeater .....
</tr>
</table>
and the transformation of inner repeater:
<td>
..content..
</td>
Is there any issue with that?
Best regards,
Helena Grulichova