i think so
i think during the 9/11 attacks, most Central and West Coast stations were airing ABC, CBS and NBC's morning shows pre-taped on a hour delay basis until shortly before 9 AM ET, 8 AM CT, 7 AM CT, 6 AM PT when the first reports of the first hijack plane hitting the North Tower of the World Trade Center came in and everyone in all 4 coast saw live the second plane and the rest of the attack and building collapses of the twin towers live. i do believe in Dallas, WFAA Channel 8 (ABC), KTVT CBS 11 and KXAS NBC 5 were airing the morning shows on tape delay until the their respected networks broke into the pre-taped programming for live coverage and KDFW Fox 4 was live and they covered it with them joining in on live coverage from WNYW Fox 5 out of New York City of the start of the attack itself due to Fox having no national morning show and KDFW's Good Day Dallas already into it's at the time second to last hour of news and entering it's scheduled last hour at 8 AM, and in 2001, they end their Good Day Dallas newscast at 9 AM for "Live with" which was at the time hosted by the late Regis Philbin and then newcomer Kelly Ripa.