phrasal verbIf something such as an idea or fact ties in with or ties up with something else, it is consistent with it or connected with it.
Our wedding had to tie in with David leaving the army. [VERB PARTICLE PARTICLE noun]
I've got a feeling that the death may be tied up with his visit in some way. [be V-ed P P n]
More Synonyms of tie in with
See full dictionary entry for tie