IE Nested Tables - How to get to a nested table?

First off - I am really loving what I am seeing with the IE automation. The app I am automating is very poorly designed so that part is a struggle. But the results are golden

The web app I am automating heavily uses nested tables. When I use _IETableGetCollection($oIE,-1) I find that there are four tables. that are nested in a frame. I am able to get data out of some of the tables - but it is not from the table I need it from. I am thinking that the issue is I am addressing the wrong frame. Here is what I have so far:

#include <IE.au3>
#include <Array.au3>

$URL="https://someurl.com/"

Local $oIE = _IECreate($URL,1,1,1,1)

; Presses the search button to change to the search window.
_IELinkClickByText($oIE, "SEARCH")
_IELoadWait($oIE, 250)

Local $oForms = _IEFormGetCollection($oIE)
Local $oFrame = _IEFrameGetObjByName($oIE, "main")
$iFrame = _IEFrameGetObjByName($oFrame, "bottom")
Local $oForm = _IEFormGetObjByName ($iFrame, "search")
Local $oQuery1 = _IEFormElementGetObjByName($oForm,"ClientNumber")
Local $ClientNumber = "18590" ;ClipGet()
_IEFormElementSetValue ($oQuery1,$ClientNumber)
_IEFormSubmit($oForm)
_IELoadWait($oIE, 500)


; Look at the results
$oTable = _IETableGetCollection($oIE,1)

;$oTable = _IETableGetCollection($oIE,-1 ;Returns 4 although there are many more tables nested.)
;Local $iNumTables = @extended
;MsgBox(0, "Table Info", "There are " & $iNumTables & " tables on the page")

$aTableData = _IETableWriteToArray($oTable)
_ArrayDisplay($aTableData)

I am wondering if there is a limited to the level of nested tables that the functions can see or do I need to somehow get the functions to look at the "bottom" iframe page?

I wish I could show you the website but it is proprietary, behind firewalls and vpn tunnels, etc. It is a piece of work though.