The Manchester United boss, who managed the Blues to three Premier League titles in two spells, claimed his former club were 'very defensive'.
But following the 1-1 draw with Burnley, which increased Chelsea's lead to 10 points, Conte admitted he heard Mourinho's thinly veiled barb.
He said: "Yeah [I heard it], but I don’t like to reply to other coaches."
Chelsea player ratings against Burnley
Sun, February 12, 2017
Express Sport rates the Chelsea players' performances during their Premier League clash with Burnley
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How did the Chelsea players get on during their clash with Burnley?
Chelsea boss Antonio Conte
United are 12 points behind Chelsea and Mourinho was unable to resist having a dig at the league leaders.
He said: "Chelsea are very good defensive team.
"They defend very well and with lots of players and I think in this situation a very defensive team wins the title with counterattack goals and set pieces goals so I don't think they will let it slip but football is football."
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