Lost czech/eastern puppet shows

Recently a Brazilian youtuber made a video about two puppet shows shown on TV Cultura in the Glub Glub program presumably from the Czech Republic (but they may have been made in the former Czechoslovakia also depending on the year) and in this video she claimed not to have found information on the intermet about these two shows that she recorded. So I took the liberty of making a post on reddit from the Czech Republic and now a post here on the forum to find out if anyone has any information that could lead to the names of the programs and those involved.

They are two programs with different plots but it is assumed that they were made by the same studio since they both use similar techniques (puppets manipulated by people dressed in black on a black background), the two programs lack dialogue with the bear being a bear and a rabbit interacting and grandpa Cornelius a puppet of an old man (but with real human hands) interacting with objects. The videos uploaded on this youtuber's alternative channel are the only ones (at least as far as we know so far) available on the internet
Link to her video:
m.youtube.com/watch?v=WOqeBPDa170&t=412s

Link to the episodes with the bear:
m.youtube.com/watch?v=Z_ui_RjtVHA
m.youtube.com/watch?v=WpfrbncuGbk
m.youtube.com/watch?v=OGVabuTE7cw

Link with Grandpa Cornelio:
m.youtube.com/watch?v=RYa8n8J7jhc&t=7s

Reddit link for those who want to follow:
https://www.reddit.com/r/czech/comments/t5u0cz/lost_tv_shows/