Leicester spurned the chance to re-establish a 10-point lead at the top of the Championship as Ipswich struck a late leveller to earn a 1-1 draw on Monday night.
Leif Davis' unfortunate own goal after just over half an hour had put the Foxes on course to put last weekend's 3-1 defeat at Coventry behind them.
But after Massimo Luongo's dipping strike was only parried by Mads Hermansen, Jeremy Sarmiento pounced to tuck home the valuable equaliser with 89 minutes on the clock.
That ensured the pair - who have almost exclusively occupied the top two spots throughout the campaign -could not be separated again, less than a month after a 1-1 draw at Portman Road, when Sam Morsy haunted the Foxes with a 93rd-minute equaliser.
Leicester remain seven points clear at the top of the pile, but only seven points clear of the Tractor Boys, who climb back above Southampton into second.
Both sides are next in action on Saturday January 27, in the fourth round of the FA Cup.
Ipswich host Maidstone United of the National League South at 12.30pm, before Leicester take on Birmingham at the King Power at 3pm.
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