DevOps, CI/CD and Automation

I have an XML with data as below: 

<row>

<c1>Name1></c1>

<c2>Name2</c2>

<c6>Addressline</c6>

<c6 m=2>Addressline 2 </c6>

<c6 m=3>Addressline 3 </c6>

</row>.

I want to see data as 

c1     c2      c6 

Name1 Name2 [Addressline, Addressline 2, Addressline 3.]

My query is returning only one value at a time, while I want concatenated outcome along with single valued columns data.

Select Single.*

from dbo.CUSTOMER

A, XMLTABLE('/row' passing xmlrecord

COLUMNS ID INTEGER PATH '@id' ,

C1   PATH '/row/c1',

C2   PATH '/row/c2'

C6 varchar(100) PATH '/row/c6[position()SIngle

Please help