Complex sentence: Ammonio met Erasmus when the latter visited England in 1506--1507 and renewed their friendship from 1509--1511 after Erasmus returned from a trip to Italy, and at some point they stayed together at the home of Thomas More.
Split into simpler sentences: Ammonio met Erasmus when the latter visited England in 1506--1507, and they renewed their friendship from 1509--1511 after Erasmus returned from a trip to Italy. At some point they stayed together at the home of Thomas More.