An Interesting Cycle...PPL share price rises above Brookfield's offer, causes IPL shareholders to sell IPL and buy PPL - this further pushes up the PPL SP and has a downward pressure on IPlLs SP, causing more IPL shareholders to bail out, and so it carries on.
In the end, the only ones left in IPL will be those refusing to sell out for less than $24, but will probably end up selling to Brookfield for under $20.