This is not possible since you can only submit one geometry to the survey. You can sent data from the map widget to the survey widget by using "Sent data to this survey" and fill the location question with the selected *shape(Polygon f.e.). But this will be the geometry that is submitted.
What you can do is select your own configured map as the basemap in the survey location question (this is now possible in the Survey123 webversion and not only Survey123Connect) . Add the map question press edit and select the desired map.
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