Rumble link in Youtube Description

#1
Hey! I want to know that if it is legal to add Rumble link in the description of youtube. Actually I have a video series of 3 videos and i want to upload all 3 at rumble and first two on youtube and give link(Rumble) to the next vedio in YT description.
Is it going o void any ToC of either Youtube or Rumble?
Please let me know.
@Mario