Champions Bayern Munich made it four wins in a row with a comfortable 3-0 win at Hannover.
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Schalke will sign Senegalese defender Salif Sane from Hannover on a four-year contract at the end of the season.
Hannover had a goal that would have made it 3-3 at home to RB Leipzig chalked off but a similar Bayern Munich goal was not reviewed.
Michy Batshuayi's brilliant first-half strike was enough for Borussia Dortmund to defeat visiting Hannover 1-0.
Left-back Gloster, 17, will join Hannover for next season and will play for the club's under-19s side.
Bech, 25, was given the penalty order by Hannover district court last month after biting Schalke supporter.
Hannover have been fined €20,000 after Mainz players Leon Balogun and Anthony Ujah were racially abused during a Bundesliga match last month.
Martin Kind withdrew his application for full control of Hannover 96 but the move may help him crack the Bundesliga's vaunted 50+1 rule eventually.
Hannover president Martin Kind is trying to gain a majority stake in the club, sparking debate about the restrictions of the league's ownership rules.
Former United States national team defender Steve Cherundolo has left his role at Hannover to join the coaching staff at Stuttgart.
On Tuesday, the DFB told ESPN FC it had begun proceedings. Under its rules, the club could face a fine or even a stadium closure.
Hannover president Martin Kind has apologised for the racial abuse Mainz players Leon Balogun and Anthony Ujah were subjected to on Saturday.
Bayer Leverkusen missed out on the chance to go second in the Bundesliga as they were held 4-4 by Hannover in an eight-goal thriller.
Bayern Munich battled to a home victory over Hannover to move six points clear at the top of the Bundesliga.
Niclas Fullkrug's penalty ensured Hannover avoided suffering a third straight defeat as they clinched a 1-1 draw with Stuttgart.
Bundesliga leaders Borussia Dortmund suffered their second defeat of the season as Hannover won a thrilling contest 4-2 at the HDI-Arena.
Promoted Hannover defeated injury-hit Hamburg 2-0 at home in the "little northern derby" to maintain their fine start to the Bundesliga on Friday.
A former mainstay in the U.S. defense, Steve Cherundolo is now coaching Hannover's U-17s. He speaks with ESPN FC about his new role and much more.
Burnley's preseason friendly at home to Hannover has been abandoned on police advice.
Daniel Ginczek set up three goals and scored the fourth for Stuttgart as the 2007 Bundesliga champions finished with 69 points.
German second-division side Hannover have sacked their general manager and sporting director to make way for former Schalke GM Horst Heldt.
Borussia Dortmund beat Hertha Berlin on penalties to reach the DFB Pokal quarters for the sixth-straight year. Schalke and Frankfurt also advanced.
Werder Bremen hope to re-sign Per Mertesacker if Arsenal do not extend the defender's contract.