Brad Marchand wasn't intimidated at all by Connor Bedard and even threw a playful jab his way.

Marchand Plays Mind Games With Bedard
Before the puck dropped in the recent Bruins-Blackhawks game, Brad Marchand commented on Connor Bedard in an interview.
Brad Marchand got asked about Connor Bedard today.
"I'm bigger than him" - Brad Marchand on Connor Bedard

What makes this remark even more amusing is that Marchand stands at 5'9" and weighs 176lbs, while Bedard is 5'10" and 185lbs.
Marchand Will Never Stop Being Marchand
When Connor Bedard scored his first NHL goal, Marchand couldn't resist being his usual mischievous self.
Brad Marchand introduces Connor Bedard to Brad Marchand
In the end, despite Bedard's milestone, Marchand and the Bruins emerged victorious over the Blackhawks.
As seen on Hockey Patrol - Marchand Fires A Shot At Bedard In Recent Interview
Also read on PuckReporter :
Leon Draisaitl's suspension fate confirmed by NHL Player Safety
Leon Draisaitl's suspension fate confirmed by NHL Player Safety