Mauro Icardi netted a perfect nine-minute hat-trick before Ever Banega added a treble of his own as Inter demolished Atalanta 7-1 at San Siro.
Stefano Pioli's men are up to fourth in the Serie A table having started the day behind their visitors in the standings – making the yawning gulf in class on the field all the more remarkable.
A 26th-minute header brought up 20 top-flight goals for Icardi this season and, having floated in the corner for Inter's third, Banega then stunningly helped himself to a first-half brace.
Switzerland Under-21 midfielder Remo Freuler's solo effort offered brief punctuation to an exercise in unrelenting pain for Gian Piero Gasperini's team, previously so impressive this season, before ex-Atalanta man Roberto Gagliardini added a sixth and Banega arrowed in a superb free-kick.
From the resulting free-kick, Ivan Perisic's shot punctured a disorganised defensive wall and fell invitingly for Icardi to sweep home.
The Argentinian latched on to Perisic's flick-on and was sent tumbling by Etrit Berisha before picking himself up to nonchalantly beat the cautioned goalkeeper with a penalty chipped high into the net.
Icardi completed a hat-trick clocking in at nine minutes and 13 seconds when he was left free to power home Banega's corner at the near post.
Playmaker Banega then took his turn to cash in on the defensive mayhem, delaying his run to slam home Antonio Candreva's cutback. When Candreva weaved through beleaguered opponents in the 34th minute, Banega repeated the trick.
Freuler offered a belated response as he cut into the Inter penalty area to net a fine individual goal – scant consolation three minutes from the end of an utterly shambolic half from his Atalanta team-mates.
Gagliardini was one of their number as recently as January but the 22-year-old, who never scored in Atalanta colours, displayed no mercy and the composure of a veteran when he collected Banega's pass to crash into the top corner after 52 minutes.
Having ended February with a dispiriting 3-1 home loss to Roma, Pioli can reflect with much satisfaction as his players bettered their bounce-back 5-1 win at Cagliari last weekend – emphatic form that means clawing back a five-point deficit to the top three should not be ruled out entirely.
