GCS reconstruction of the CME using STEREO-A COR2 and LASCO C2 observations. The blue and green arrows point towards two CMEs listed in the SOHO/LASCO CME catalog (i.e., two observed features). The green mesh in the middle panels corresponds to the first GCS reconstruction, assuming a single structure. The blue and green mesh in the right panels correspond to the second reconstruction, assuming two structures. For further details, see main the text.