No, in speech we seem to get by without spaces, and that's in every language that I'm aware of, but then we also don't have commas, parentheses, apostrophes, or capital letters. Somehow, intonation and emphasis must replace these (or rather, writing encodes our speech somehow) but I'm not sure how they map exactly. Question marks indicate a rising tone for example, that's about the extent of what I know

As a child learning to write, I had a phase where I put whole sentences together because that made sense to me as the next step after we learned to write letters together to form words. It took quite some convincing before I believed that adults don't secretly do this and they're only telling us to add space because they think we're not ready for the next step. I guess I innately thought words belong together and we only add a pause between sentences

There is one speech pattern where spaces can be heard though. Like in English, when you enunciate very clearly because the person isn't understanding (for example, if their English is very poor, or when you're shouting across a long distance), similarly in germanic languages I'd add time between each word, and nearly none if it's a compound word. Like how you'd pause between "get" and "out" if you want to make yourself extremely well understood, but afaik not/barely between "handy" and "man" or "quag" and "mire" because the parts haven't the same meaning, or aren't understood at all anymore, in isolation

Now I'm curious actually, might English native speakers also add less time between compound nouns/adjectives in this speech mode? So not like "quag" and "mire" but something that's commonly written apart, like "bottle cap". Do they (you?) identify and indicate things that form one concept also by separating them less, and only the written encoding is different between the languages, or do they feel like the words are fundamentally separate things in the same way that "go" and "home" are separate parts of speech?