tie in vs connect

tie in and connect both are verbs.

Word	Noun	Adjective	Verb	Adverb
tie in	No	No	Yes	No
connect	No	No	Yes	No

As verbs, tie in and connect are synonyms defined as:

Other synonyms of tie in include associate, colligate, link, link up, relate.

tie in (verb)	connect (verb)
make a logical or causal connection	make a logical or causal connection
be in connection with something relevant	join for the purpose of communication
	join by means of communication equipment
	connect, fasten, or put together two or more pieces
	land on or hit solidly
	plug into an outlet
	hit or play a ball successfully
	establish communication with someone
	establish a rapport or relationship
	be or become joined or united or linked
	be scheduled so as to provide continuing service, as in transportation