Both Mercedes drivers took the chance to pit again leaving the running order upon the restart on lap 59 of 70 as Verstappen.
Another tight battle is predicted between the experienced Haas duo.
Hamilton had topped FP3 in Montréal by a healthy margin earlier on Saturday.
Mr Huth’s relatives have continued to prop up the operation since his death at the age of 91 in 2015.
Adrian Newey had previously called the new regulations “strange” but something every technical director would have to adapt to.