Wait I’m confused are you talking about this sentence?
He moved slowly in spite of the urgency of his porter, and even while he was still on the platform I noted how ill he seemed.
hope this helps not completely sure if it’s right though
What is your question
Vast means too large to see and trunk less means Legs without a body. If referring to problems that is a figurative way of saying it is too large of a problem and being trunkless means no substance. And too many little things building up to too many things.
Lots of interpretations above without a question or context. Sorry I wasn’t much more of a help