Nope, nesting works! The required ending tag on table means any nested table will open a new context and then any <tr> or <td> will now scope to that table and

Nope, nesting works! The required ending tag on table means any nested table will open a new context and then any <tr> or <td> will now scope to that table and will until the second tables closing </table>. <table> <tr> <td> <table> <tr> <td> table-cell-inside-table </table> </table>