Complex sentence: By that time, Sojka's older brother Waltre had been invited to Ecuador to give chemistry lectures in the Central University of Ecuador and, with his wife Lidy Hutzler, decided it was safer to stay there, at least until the war finished.
Split into simpler sentences: By that time, Sojka's older brother Waltre was invited to Ecuador to give chemistry lectures in the Central University of Ecuador. He went along with his wife Lidy Hutzler and decided it was safer to stay in that country, at least until the war finished.