Interaction of a coronal mass ejection and a stream interaction region: A case study Paul Geyer, Mateja Dumbović, Manuela Temmer, Astrid Veronig, Karin Dissauer and Bojan Vršnak A&A, 672 (2023) A168 Published online: 19 April 2023 DOI: 10.1051/0004-6361/202245433