No, started is not an adverb of time. It the past tense of the verb to start.
The US economy started at the same time as the USA started
Started is a verb...
we all started at the same time
they started the same time the EPF started
Sin was started in the garden of Eden for the very first time.
when it started ANOTHER ANSWER IT NEVER SHOULD'VE STARTED!!!
Peyton and Eli Manning started only about 3-4 years apart. Else there is none that started a the "same" time.
1942
1600s
It started at approximately 4:32. Coverage started at 4:00.
The sentence is correct if you and the article 'a': "She started her journey a long time ago."