Some paint and emulsion at the same time (2,6)
I believe the answer is:
in tandem
'the same time' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'some paint and emulsion' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'IN TANDEM' is hidden within 'paint and emulsion'.
'at' acts as a link.
Can you help me to learn more?
(Other definitions for in tandem that I've seen before include "Together (as a pair)" , "Working together" , "Together - as on a bicycle made for two" , "One behind the other or alongside" , "Manned it as twosome" .)