It's said he alarms teammates with his rousing talks but that passion drives the squad and O'Connell as he goes about the lineout work, defence, cleanouts and graft which gild his game.
He and Schmidt work their men on every level with a mix of goading, theory, encouragement and insistence.
"... the two of them just drive the squad," said locking partner Devin Toner. "You don't want to disappoint either of them."
Ireland have got themselves into a zone which resembles their hopes for the World Cup later this season, where they need to win multiple matches to go deep into the tournament. The task for the Blues is similar. They must win a stretch of games to stop the early rot and challenge for some respect in this year's competition to turn back the growing tide of pessimism about coach John Kirwan.
Every game becomes more critical.
An away win tonight against the unbeaten Hurricanes is needed before a bye then away games to the Waratahs, Chiefs and an Eden Park return against the Brumbies as the mid-season reviews begin.