Is there a limit to the number of packages that can be consolidated together?
No.
However, during the consolidation process, some of packages might be removed from consolidation list when the size of packages is beyond shipping restrictions. In some cases, consolidation might be cancelled when all of the packages can't be packed together.
As size limit varies in countries and shipping methods, please check more information through the link below.
https://www.tenso.com/en/static/guide_deliver_index