If I'm Zak, I show the math to Oscar and say that Lando may need his help at times to secure the WDC this year and assure him that they'll be free to race according to Papaya Rules next season with no favoritism shown to either driver.
Oscar is just so damned calm and collected in the cockpit that it makes it hard to realize he's only been in F1 for less than two seasons. He's got the confidence of a multi-time championship driver. That move on Charles was masterful and to keep him behind and not make a race-losing mistake for 30 laps was nuts.