Portuguese forward Goncalves opened the scoring in the 15th minute, before putting Chennaiyin two-up by converting a penalty in the 21st minute.
Manuel Onwu scored a hat-trick for the hosts, while Bartholomew Ogbeche netted twice to lead the Golden Boot standings with 15 to his name.
News of all that's transpired on and off the football field.
Both sides created chances in the first half but it was SCEB who converted them and deservedly headed into the break with a two-goal cushion.
In a game that was closely contested in midfield, a Mohamed Larbi (43rd minute) spot-kick seemed to have given Mumbai City all three points. But an injury-time penalty from Stankovic (90+4th) ensured Hyderabad salvaged a point at home.
Earlier in the day, TRAU FC earn maiden I-League point after 2-2 draw against Real Kashmir,
ATK may have qualified for the play-offs, but the loss came as a big blow to their AFC Champions League qualifying aspirations with FC Goa taking a three-point lead at the top with only a match left for the league stage to conclude.
A 10-man Odisha FC registered their second win of the season, beating Hyderabad FC 3-2 in the Hero Indian Super League match, in Pune, on Wednesday.
This was the 2019-20 edition's first goalless draw since Match 22 between ATK FC and Odisha FC, which last registered the 0-0 scoreline way back in November 24, 2019.
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Ghana World Cupper Asamoah Gyan popped up with a header six minutes from time to give NorthEast United a 2-1 victory against Odisha FC.
Adam Le Fondre put Sergio Lobera's men further ahead in the 59th minute as Hyderabad tasted their first defeat of the season.
All the results from the I-League and ISL matches played on Saturday.
News of all that's transpired on and off the football field
All the results from the I-League and ISL matches played on Sunday
News of all that's transpired on and off the football field