The two pieces of evidence that support the connection that large blue caterpillars do not pose a significant threat to the oregano plant are:
A. "And though Myrmica might lose individual battles to the butterflies, the ants are invasive enough that their total populations aren’t at risk of being harmed by the butterflies."
E. "From an evolutionary perspective, Thomas and Barbero say that the Large Blue butterflies gained an advantage by using scents to glean which oregano plants are fighting off Myrmica invasions."
These statements suggest that while there may be interactions between the caterpillars and the oregano plants, the overall impact on the oregano plants is not significant due to the resilience and invasiveness of the ants.