Derek McInnes conceded Rangers "didn't play to our level" on his return to Hearts, but could not fault the spirit his side showed to snatch a 2-2 draw.
Manchester City will face Bradford City in the Carabao Cup quarter-finals, while Fleetwood Town's reward for stunning Arsenal is another home game against top-flight opponents.
Juventus dropped way off the pace set by Serie A's leading teams as it went down 2-0 to Genoa at Stadio Comunale Luigi Ferraris.
Samuel Mbangula hit a hat-trick to steer Bologna to a 4-2 comeback win over AC Milan, which lost for the first time in Serie A under Ruben Amorim.
Fleetwood Town pulled off a giant-killing for the ages as it beat Premier League champion Arsenal 5-3 on penalties in the Carabao Cup.
