At the beginning of December 2019, Tiller was part of the national group at the home World Cup in Lillehammer . After going twelfth on the trail after a strong jump , he saved himself to 21st place with a decent mileage, with which he won his first ten World Cup points. Nevertheless, due to the high level of competition in the Norwegian team, he was relegated to the Continental Cup , where he reached the individual podium for the first time in Oberwiesenthal in mid-January 2020 in second behind Harald Johnas Riiber . In the further course of the season, Tiller showed consistently good performances, especially in the jumping area, and was thus able to achieve further podium positions. In addition, he won the first mixed team competition in the Continental Cup in Eisenerz, together with Aleksander Skoglund , Mari Leinan Lund and Gyda Westvold Hansen .