As president of the Vatican's Commission for Religious Relations with the Jews, Willebrands long sought to improve troubled relations between the faiths. He also was mentioned as a possible candidate for the papacy at the two conclaves of 1978.Googling around (oh my, so many SSPX/sedevacantist type sites that list him among the heresiarchs!) I found this interesting tidbit in an interview with George Lindbeck, noted Luthern theologians and one of the Protestant observers at the Council in First Things
We did a fair amount of entertaining, even though LWF emoluments were not, shall we say, excessive. Indeed, one of my favorite Council memories is of Cardinal Willebrands (who was then Bishop Willebrands and second-in-command to Cardinal Bea at the Secretariat for Christian Unity) and my wife smoking Willebrands' excellent Dutch cigars together after dinner.Requiescat in Pace.