Häcken had 4–0 from the home game with Katowice – when substitute Helena Sampaio scored three goals in 14 minutes – and secured the round of 16 with 3–1 in Poland after Jusi Bahs, Paulina Nyströms and Faith Chinzimus full hits.
Hammarby, who had 4–1 from the "home game" at Grimsta IP, got 1–1 against Brann.
How the rest of the European adventure will look, the clubs will have to wait to know, as the round of 16 will be drawn in French Lyon on Friday.
Häcken, who recently won against Hammarby, tops the Damallsvenskan table with 52 points. Hammarby is second with 48. Four rounds remain to be played.