When I import 2 ranges that are each in Columns A to L in their respective sheets, the second range is being returned in Columns M to X.

How can I fix it so the data from both ranges is returned in Columns A to L one range below the other?

My current formula

=Query({   importrange("https://docs.google.com/spreadsheets/d/1xaZ2ZJDRWZOLhgC7MEy9A88hJIxqE-zmfXb4JSzw2yw/edit?gid=801569922#gid=801569922","Missions | RAW!A:L"),   importrange("https://docs.google.com/spreadsheets/d/1xaZ2ZJDRWZOLhgC7MEy9A88hJIxqE-zmfXb4JSzw2yw/edit?gid=801569922#gid=801569922","Authentication | RAW!A:L")},"SELECT * WHERE Col1 IS NOT NULL")