Zwingli, who had studied in Basel at the same time as Erasmus, had arrived at a more radical renewal than Luther and his ideas differed from the latter in several points. A reconciliation attempt at the Marburg Colloquy in 1529 failed. Although the two charismatic leaders found a consensus on fourteen points, they kept differing on the last one on the Eucharist: Luther maintained that through sacramental union the bread and wine in the Lord's Supper became truly the flesh and blood of Christ, whereas Zwingli considered the bread and wine only symbols. This schism and the defeat of Zürich in the Second War of Kappel in 1531, where Zwingli was killed on the battlefield, were a serious setback, ultimately limiting Zwinglianism to parts of the Swiss confederacy and preventing its adoption in areas north of the Rhine.