In הַ֥לְלוּ (Psalms 150:1 et alia) does the first lamed with the schwa end the first syllable or begin a second open syllable? Tradition has this word as three syllables ha le lu. Should it be just two hal lu? I note that other consonants with a schwa close a syllable, e.g. in the same verse בְּקָדְשׁ֑וֹ be qad sho.