Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
KBTR-CD
Table title:
Digital channels
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Channel </th><th colspan=1 rowspan=1 > Video </th><th colspan=1 rowspan=1 > Aspect </th><th colspan=1 rowspan=1 > PSIP Short Name </th><th colspan=1 rowspan=1 > Programming </th></tr>
<tr> <td colspan=1 rowspan=1 > 41.1 </td><td colspan=1 rowspan=1 > 720p </td><td colspan=1 rowspan=1 > 16:9 </td><td colspan=1 rowspan=1 > WBTR-HD </td><td colspan=1 rowspan=1 > Main WBTR programming / This TV </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 41.2 </td><td colspan=1 rowspan=2 > 480i </td><td colspan=1 rowspan=2 > 4:3 </td><td colspan=1 rowspan=1 > NEWS 2 </td><td class="highlighted"  colspan=1 rowspan=1 > WBRZ Plus (News 2 Rebroadcast) (simulcast from channel 2.2) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 41.3 </td><td colspan=1 rowspan=1 > WBRZ-WX </td><td class="highlighted"  colspan=1 rowspan=1 > WBRZ Weather (previously aired on channel 2.3) </td></tr>
</table>
Question:
On which two channels did KBTR began simulcasting WBRZ's news and weather?
Answer:
KBTR began simulcasting WBRZ's news and weather channels on 41.2 and 41.3.