BufferCount groups the notifications of the source sequence into chunks containing the number of elements specified in the Count property. The overlap between the elements in each chunk can be controlled using the Skip property.

If no skip value is provided, the chunks will be strictly non-overlapping, with a new chunk beginning when the previous chunk ends. If the skip value is less than the specified number of elements, chunks will be overlapping, with a new buffer created every Skip notifications. Finally, if the skip value is greater than the specified number of elements, there will be a gap between each chunk where elements from the source sequence will be dropped.