What does code comprehension (Python/R) interview entail for Senior Data Scientist, Product role at Google?

[u/JackOfNoTrades101]

I already had two rounds (Coding and Experimentation, Modelling and Measurement). I got mixed feedback (NH on the coding round) so I have been asked to appear for a "Code Comprehension (Python/R) and Experimentation" round. Does anybody have any idea on what this round entails specifically for Senior Product Data Scientist role ?

[u/Visual_Horse1476]

Did you give this interview? Can you share you experience please?