While the Kavanaugh Confirmation hearing is not a trial, the Democrats with their accuser (Christine Blasey Ford) of like 35 years ago have virtually made this confirmation hearing like a trial (actually circus.).
Hence, since the Democrats have kinda turned the confirmation hearing into something of a trial, Kavanaugh should get a "speedy" trial with only in regards to this accuser Christine Blasey Ford of 35 years ago.
Obama's Supreme Court nominee, Merrick Garland, was to go before a Confirmation Hearing....which is not like a criminal trial
Hence, Merrick Garland, would not be entitled to a speedy trial since a Supreme Court Confirmation Hearing is not a trial; it's basically a job interview.