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Lyman-alpha transits provide a window into atmospheric escape comma a process that has observably shaped the exoplanet population. However comma mass loss estimates from these observations are highly model dependent. A recently predicted feature of hot Jupiter transits could begin dismantling this model dependencedoublePoint the delayed transit of the outflow tail. These transits have been hiding in plain sight comma just slightly beyond the primary transits sampled by past Lyman-alpha transit observations. Critically comma the plasma causing this delayed transit will have reached ionization equilibrium. Knowing the plasma.s ionization state eliminates a confounding factor from the interpretation of the transit signal comma enabling a stronger link between the the observations and the rate and efficiency of the planet.s mass loss. This program will observe the delayed transit from the outflow tail of HD 189733 b comma a planet with a well-established primary Lyman-alpha transit. The outcome will be an improved measurement of HD 189733 b.s mass loss rate and efficiency comma with broader implications for mass loss across the population of exoplanets.