That’s a good question. Could be a sub-contractor.
Incidentally, last Sunday, I heard about some people in Baltimore who hadn’t had power restored because this humongous tree felled some power lines. The tree brought down these lines, but it cannot be moved by the power company. It cannot be broken up, and the power company (presumably BG&E) does not have the proper equipment to move it. It is simply too big, and the street might not be wide enough to place a properly large crane to do the job.
The largest crane I have seen sent to a tree job is 120ton, and those take 2-3 hours to set up and break down. Cranes generally breakdown into sections 8ft wide and under 40 ft long. Most tree work is done with cranes under 90 ton capacity. More likely the problem is safely cutting the tree into pieces small enough for the equipment to move. Also the largest chainsaw bars are rare in the east (88 inches?).
I have seen logs so large that only one could fit on the log truck (weight), we placed that one in with the crane. Do you know if there are any foreign objects in the tree? E.G. metal, concrete, masonry, ropes, etc.