PSPO 1 Vs PSPO 2 - Complexity differentiation

Hello All,

I secured the PSM1 certification a few days ago with 95%. My ultimate objective, and also my current role is of a product owner. So I intend to go until PSPO2.

Now, without a prescribed curriculum for PSPO, I wish to know the level of preparation required for PSPO 1 in comparison to PSPO2. Is it like, all topics necessary for PSPO 2 are also required for PSPO1, but with lesser complexity or is there something required exclusively for PSPO2 which may not be touched upon in PSPO1.