in phase/out of phase
If two things are happening in/out of phase they are reaching the same or related stages at the same time/at different times.
Thesaurus: synonyms and related words
Stages & phases
- beta
- early-stage
- early-term
- landmark
- leg
- period
- phase
- point
- stage
- step
- stepping stone
- tertiary
- the home straight
- twilight