Mbowe and Matiko, who are charged with 11 sedition counts alongside seven other Chadema senior party officials, had appeared before the court when their case came for mention.
Principal Resident Magistrate Wilbard Mashauri adjourned the case to December 21, for another mention, pending determination of appeals lodged by both the defence and prosecution at the High Court and Court of Appeal, respectively.
In the today's session, however, two accused persons Kawe MP Halima Mdee and Tarime Urban lawmaker John Heche could not attend for various reasons.
The court was told that Mdee was in Burundi for a parliamentary sports mission, while Heche was attending his sick wife. The court accepted the reasons advances for their absence.