"contacted separately" is correct and can be used in written English.
It generally means that two or more people have been contacted without the other knowing. For example, "The teacher contacted the parents of the students separately."
They met in August 2012 through a matchmaker whom their mothers contacted separately.
(Contacted separately, both executives, speaking on the condition of anonymity, confirmed their comments made to Mr. Faires).
Dozens of current and former workers were interviewed for this article, some provided by the union, some by Honda and some contacted separately.
Both Uber and Grab declined to comment when contacted separately for comment.
She was contacted separately by two people - who did not want to be named - and both pinpointed one wreck as the source.
The THH-VCSOA has four contacts enabling the p- and n-channels to be contacted separately but biased with the same voltage.
Here, we report the electrical degradation pattern of a mechanically exfoliated BP field effect transistor (FET) in terms of the channel and contact, separately.
This functionality is demonstrated by utilizing two methods to compute time-to-contact separately for the same mission.
19 Clustering was made using the unsupervised learning SOM algorithm implemented in AuPosSOM for each type of contact separately.
T-tests were used to compare the NLLFS and the NSFG adolescents (weighted data) on the age of first heterosexual contact, separately by gender.
In this paper, we described a large-scale Belgian contact survey, in which respondents recorded their contacts over two random days, one weekday and one weekend day, and estimated their professional contacts separately if these exceeded 20.
