Research on entrepreneurial ecosystems and accelerators has advanced understanding of
how entrepreneur support processes expand access to education, mentors, and networks
while strengthening venture strategy. Less is known, however, about how temporal
dynamics evolve between participants and support stakeholders across the full
accelerator lifecycle, especially in cross-ecosystem settings. This study examines that
under-theorized process in a Cross-Ecosystem Resource Sharing accelerator linking
entrepreneurs in Bulgaria with support stakeholders in California’s Silicon Valley. The
findings reveal a pattern of co-evolving temporal dynamics in which participant and
support-stakeholder temporal orientations become more closely aligned during pre-
selection, selection, and acceleration, but weaken in the post-program period. This study
develops a dual-perspective temporal process model showing how actors navigate
temporal investment, trade-offs, tempo, periodization, and future feasibility across
support phases. In doing so, the paper extends research on entrepreneurial ecosystems,
entrepreneur support processes, and temporality by showing that accelerator gains
depend not only on expanded resource access and more developed venture strategy, but
on whether temporal alignment is sustained sufficiently to enable coordinated post-
program execution.