Early in the session Roland was indeed faster than Belmondo. Simtek's data would later indicate that on a subsequent lap he had a minor excursion, and had then given the steering wheel a shake to ensure that all was OK, and to clean the tyres. He then went for another quick lap.
"He didn't lose a lot of time, but it was enough for him to think, 'I'd better check the car,'" says Brabham. "Looking at the data he'd zig-zagged and braked, and in his mind he'd be saying, 'Do I come in and check it?' I can understand why he didn't.
"He couldn't have felt if there was an issue with the front wing, and off he went. And that lap is when he didn't come round."