¨peaceful coexistance¨ seems wordy.

Victor Edwin SJ: Christian-Muslim Relations in Pakistan
victoredwin.blogspot.com/.../christian-muslim-relations-in-pakistan.h...Cached
29 Apr 2010 – I felt that I had to do something in this area to promote **dialogue and harmony*** among various religions but particularly between Christians and ...
#
Undercover mosque, undercover Islamism!
www.population-growth-migration.info/essays/undercover2.htm...
... most either denied any knowledge of such preacher activities, asserting that on the contrary, their places promote inter–faith **dialogue and harmony** in society, ...

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Russian-Polish talks - President of Russia
eng.kremlin.ru/news/1422Cached
6 Dec 2010 – ... by oil and other harmful substances, and a protocol of intent on establishing **centres for dialogue and harmony** in Russia and Poland.

Alumni Activities - :: Maingate Magazine ::
staff.aub.edu.lb/~webmgate/spring2006/activities.htmCached
Maksoud (BA '49) noted that the arts were often a particularly effective vehicle for **dialogue and harmony** between diverse cultures and societies. Following her ...

I only suggest "communication" as an alternative to dialogue. Whereas "peaceful coexistence " is rather cliched and perhaps a bit long, I think the "peaceful" part would be understood in the context.
"Coexistence" sounds less touchy-feely and more formal to me, which is why I prefer it here myself.

x

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Here there are four examples where the word instances has been used with the same meaning I have used it. As you see it is a sense widely used that obviously Lisa is not aware of.


-Instances of adaptations to meet individual differences. H.M.Wessel

-While you could certaoinly find instances of people doing things because they like to do them, you also could find instances of people doing things they do not like.(Theories of human communication - S.W. Littlejohn).

-This information collected from both verbal and non verbal messages, is essential in intercultural communication because in many instances you are dealing with strangers. (Communication between cultures- L.A Samovar)

-Effective clinical practice thus involves many instances where critical information must be accurately communicated.(Professional Communication and Team CollaborationMichelle O’Daniel; Alan H. Rosenstein.)

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and Neilmac

Another option might be "a space for dialogue and harmonious coexistence."

Hope this helps :-)

These are words frequently used when talking about the Arab-Hebrew speaking people. There are 1,760,000 results for this expression (Google).