Study to Assess Change in Disease Activity and Adverse Events of Oral Venetoclax With Intravenous (IV) Obinutuzumab in Adult Participants With Recurring Chronic Lymphocytic Leukemia (CLL)

In this study, we will look at two medicines called venetoclax and obinutuzumab for patients whose chronic lymphocytic leukemia has come back. We will also check if this treatment is safe for them.