Illustration of a possible explanation for the preferential orientation of a switchback, assuming interchange reconnection in the low corona as the initial mechanism. The sketch displays an element of open flux tubes from the photosphere expanding out into a faster corona, along closed loops that form the magnetic carpet. The blue (red) color is associated with the negative (positive) polarity of the field lines. Some potential reconnection sites are highlighted in light yellow (non-exhaustive) and reconnected field lines are displayed in yellow. The arrows on the right highlight the relative speed gradient that exists between the differentially rotating photosphere and the quasi-rigidly rotating corona.