Table in table, but not in tr-td.
The only thing missing is the end tag of the first table! Nav. 4.0: the outter table is ignored. Xena 6.0: second table start tag is ignored. Contents put in 1 table.

caption of table1.
first cell in table1 | second cell in table1
third cell in table1 | fourth cell in table1

caption of table2.
cell1 in table2 | cell2 in table2
cell3 in table2 | cell4 in table2

Last text.