Porto coach Sergio Conceicao congratulated compatriot Carlos Carvalhal on masterminding Swansea's recent victory over Liverpool but admits facing the Reds in the Champions League is a different prospect.
Carvalhal's analogy was that he slowed down Liverpool's Formula One car in traffic in their 1-0 win at the Liberty Stadium last month.
However, while Conceicao appreciated his fellow Portuguese's efforts, he is not sure the same tactic can be applied to Europe's top club competition.
'I take this opportunity to congratulate Carlos Carvalhal for what he is doing in the Premier League, and also to (Wolves head coach) Nuno Espirito Santo for what he is doing in the second tier.