Unfortunately, the Extension API does not support this model of different Extension Apps invoking each others' services by design. Some customers have asked for this feature in the past and the product team is continuing to evaluate the ask, so we appreciate your feedback on this as it helps us drive the roadmap.

Unfortunately, the Extension API does not support this model of different Extension Apps invoking each others' services by design. Some customers have asked for this feature in the past and the product team is evaluating the ask, so thanks for helping to raise this.