(Note: I am not sure on how to phrase this question, so if you can, please edit for clarity)
So, recently a question came into my mind about whether we can actually define where syllables begin and end in a situation where three or more consonants occur in between vowels, especially between words.
When there are only one or two consonants, we can usually say. For example there is a clear difference between 'me rant' (ignoring the obvious meaninglessness) and 'mere ant' or 'nigh star' and 'nice tar' because a glottal stop is inserted in the first example and an easily distinguishable open syllable is caused in the second, although quickly saying the second may also cause ambiguity.
My question however mainly applies to when three or more consonants occur between vowels, such as in 'cork screw' versus 'cork's crew' in between which there is no difference in pronunciation, even when spoken slowly, unless the speaker intentionally pauses between words. Here the distinction of where the first syllable ends and the other begins seems to be purely morphological (am I using the term correctly?), and you could divide them as you wish. Same thing, but slightly different, the popular phrase 'thank you' could be realised as /θæŋk.juː/, or /θæŋ.kʲuː/, or even /θæŋ.cuː/, in normal speed speech, they all sound the same. So, my question is whether you can define where one syllable ends and the other begins in this kind of situation (without looking at where the words draw the line) or is it just as the person wishes.