Remove top 2 elements along with namespace using XSLT - xslt

Question

I have an input XML as shown below
<ns9:Messages xmlns:ns9="http://sap.com/xi/XI/SplitAndMerge">
<ns9:Message1>
<ZCOD_SERVICE_CONFIRMATION02>
<IDOC BEGIN="1">
<EDI_DC40 SEGMENT="1">
<DIRECT>2</DIRECT>
<MESTYP>COD_SERVICE_CONFIRMATION</MESTYP>
</EDI_DC40>
<E101COD_S_SRV_CONF SEGMENT="1">
<REFOBJKEY>0000122425</REFOBJKEY>
<REFDOCTYPE>L2</REFDOCTYPE>
</E101COD_S_SRV_CONF>
</IDOC>
</ZCOD_SERVICE_CONFIRMATION02>
</ns9:Message1>
</ns9:Messages>
I need the output to be as below, essentially removing the top 2 elements and the namespace. I am able to do it by applying 2 XSLT one after another, but how can I do it using one XSLT.
Please note I can not use template match on the 3rd level node (ZCOD_SERVICE_CONFIRMATION02) as this name can be anything in runtime.
<?xml version="1.0"?>
<ZCOD_SERVICE_CONFIRMATION02>
<IDOC BEGIN="1">
<EDI_DC40 SEGMENT="1">
<DIRECT>2</DIRECT>
<MESTYP>COD_SERVICE_CONFIRMATION</MESTYP>
</EDI_DC40>
<E101COD_S_SRV_CONF SEGMENT="1">
<REFOBJKEY>0000122425</REFOBJKEY>
<REFDOCTYPE>L2</REFDOCTYPE>
</E101COD_S_SRV_CONF>
</IDOC>
</ZCOD_SERVICE_CONFIRMATION02>
Best regards, Abinash

Answer 1

Assuming that the name and namespace of your 2nd level node is fixed (ns9:Message1), you could apply the following XSLT:
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ns9="http://sap.com" version="2.0">
<xsl:output exclude-result-prefixes="ns9" indent="yes"/>
<xsl:template match="/">
<xsl:copy-of copy-namespaces="no" select="//*[parent::ns9:Message1]"/>
</xsl:template>
</xsl:stylesheet>