|NWA champion Ric Flair and AWA champion Jumbo Tsuruta|
(Verne Gagne is behind them left.)
Flair was NWA champion most of that time, losing the title briefly to Kerry Von Erich in Texas on 5/6/84 and regaining on 5/24/84 in Japan.
The photo above (from a Japanese magazine) was not taken in Japan, since Flair's only known appearance during that time (when he regained the the title from Von Erich) was roughly a week after Tsuruta lost the AWA title to Martel.
It was likely taken 3/10/84 in St. Louis, MO when Flair and Tsuruta were on the same card at the Kiel:
St. Louis, MO 3/10/84
NWA champion Ric Flair vs. King Kong Brody
Wahoo McDaniel vs. Harley Race (Indian Strap Match non-title)
Greg Gagne and Ted Oates vs. AWA champion Jumbo Tsuruta and Genichiro Tenyru
Blackjack Mulligan vs. Ox Baker
Kimala vs. Bulldog Bob Brown and Buck Zumhofe
Blackjack Lanza vs. Roger Kirby
Luke Graham vs. Jay Wolfe
Buzz Tyler and Ron Ritchie vs. The Grapplers
The two never had a NWA title vs. AWA title match. But it certainly was a busy few months for these two major championships in the spring of 1984.