In Acts 20:7, "breaking bread" is often rigidly interpreted as "communion" (which, it is claimed, establishes that this was a "sacred Sunday church service" in which communion service was part), but Acts 2:46 is clear that they "broke bread" daily house to house, which cannot refer to "communion" for that would mean they had communion every day in everyone's house. Acts 20:7 is nothing more than a post-Sabbath (Saturday night) fellowship meal at which Paul preached what many thought would be his last message to them before his departure at the very first light Sunday morning, which means there was no Sunday morning service.
Since a Bible day begins at sunset, that means the "first day of the week" began as the Sabbath sun set. It is then these Christians got together and remained all night, which made necessary the "many lights burning". The chapter is there not to establish a new day of worship, but to document the MIRACLE resurrection of Eutycus (Acts 20:7) It is more than "likely", it is FACT, according to church historians, that Christians everywhere in the world kept the Sabbath (and in some places Sunday as well), but the only two place this didn't happen was in Alexandrian and Rome, major operational hubs for the kingdom of Satan.