Thomas Mueller came off the bench to score the victor and Sven Ulreich saved a 95th-minute penalty as Bayern Munich won 1-0 at VfB Stuttgart on Saturday to go 11 points clear in the Bundesliga.
Bayern have won 13 of their 14 games since Jupp Heynckes replaced Carlo Ancelotti as coach at the start of October.
Mats Hummels' hopes of marking his 29th birthday with a goal disappeared when he was replaced by Sule, though it was another replacement in Muller who finally found a way beyond Stuttgart's last line of defence.
Coman and Lewandowski missed late chances to seal the result before Niklas Suele conceded the penalty.
The Germany global fired a snapshot inside the near post to set Bayern on their way to a fourth straight league win, with second-placed Schalke's failure to win at Eintracht Frankfurt making the result all the sweeter.
"We always believe in ourselves and push each other - the way this team has developed is super".
Eintracht raced out of the blocks when Luka Jovic beat Schalke goalkeeper Ralf Faehrmann with just two minutes gone and went 2-0 up 24 minutes from time when Sebastien Haller came on to drive in their second.
There was more drama at mid-table Augsburg as Iceland striker Alfred Finnbogason scored twice in injury-time to claim a hat-trick and grab a 3-3 draw against Freiburg.
Zieler produced a string of eye-catching saves as Bayern looked in danger of failing to find the net for the first time in all competitions since a 2-0 league defeat to Hoffenheim way back on September 9.
Federation Internationale de Football Association rules stipulate that a player can not play for more than two clubs during a season and, given that Sanches has made 10 appearances for Swansea this term as well as his brief period on the field for Bayern, he wouldn't be able to play elsewhere.
Veteran Peru striker Claudio Pizarro, 39, now at Cologne, has scored 191 goals over multiple stints at Bayern and Werder Bremen.