Earlier, speaking to Kevin Pietersen, India skipper Virat Kohli had also made it clear that for him Tests are the real deal and the whole value of the oldest format comes with playing it over five days.
Even Sachin Tendulkar wasn't impressed with the idea.
The ICC cricket committee is likely to consider four-day Test matches as being part of the World Test Championship from 2023.
Warner was strident in his opposition, saying: "I have no interest in four-day cricket".
