Opening succession of Latin letters (5)

I believe the answer is:

inlet

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'opening succession' is the definition.
'inlet' can be an answer for 'opening' (inlet can mean a small opening). I'm unsure of the 'succession' bit.

'of latin letters' is the wordplay.
'of' indicates a hidden word.
'INLET' is hidden in the letters of 'latin letters'.

Can you help me to learn more?

(Other definitions for inlet that I've seen before include "Gulf" , "Arm off a larger body of water between headlands" , "Small area of sea" , "Fjord" , "Coastal feature" .)

I've seen this clue in The Times.

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