fall through the cracks
US /fɔl θru ðə kræks/
UK /fɔl θru ðə kræks/

1.
passar despercebido, ficar para trás
to be overlooked or missed, especially in a system or process
:
•
We need to make sure no student falls through the cracks in this new program.
Precisamos garantir que nenhum aluno passe despercebido neste novo programa.
•
Important details often fall through the cracks when communication is poor.
Detalhes importantes frequentemente passam despercebidos quando a comunicação é ruim.