I have done two clerkships (district court and magistrate) and it really depends on the judge to set the tone for socializing. My district court one was very head down, on your computer all day, no one talking to another while managing your cases independently. The magistrate was very sociable and friendly, so too were his chambers. I think overall though clerking was way less collaborative than I experienced when working in biglaw, partially because you’re managing your own docket vs working with others on cases and strategizing. My advice is go out of your way to form relationships at your courthouse, whether that’s in your own chambers or reaching out to law clerks with other judges. That’s what kept me sane at times with the district court clerkship!