What will happen when the large funnel is pushed down into the water basin?

When the large funnel is pushed down into the water basin, it will displace some of the water, causing the water level to rise. If the funnel is sealed or submerged sufficiently, it may create a partial vacuum inside, preventing water from entering the funnel completely. This can lead to a pressure difference that might cause water to flow around the funnel instead of into it. Additionally, if the funnel is pushed down quickly, it may cause splashing or turbulence in the surrounding water.