This work fits within a broader framework of bilingual language development in relation to the Interface Hypothesis. In this study, I focus on a specific population of bilingual speakers — L2 advanced speakers of English from different L1 backgrounds, using specific interface structures — pronouns and reflexives in Picture Noun Phrases (PNPs, e.g. Sheldon showed Leonard a picture of him/himself)as windows into the non-convergence bilingual speakers exhibit at the interface structures. Specifically, this work investigates the residual non-convergence in advanced L2 speakers for structures involving interfaces between syntax and semantics/pragmatics, centering around two accounts: crosslinguistic influence and processing inefficiency. This study lends support to a model of L2 anaphora resolution in which different weighs and directions of structural and non-structural information are considered on a gradient basis.