Within the third wave of digital service innovation, framing is becoming increasingly complex. Accordingly, design practice finds itself in a transition from designing single service solutions that are shared, to designing systemic solutions that are shareable. We report a case study in which we use Cultural Historical Activity Theory (CHAT) to analyze the framing process that a designer went through when designing a digital service for a Connected Care startup. Results show the importance of the designer's activity awareness and the challenge of dealing with relational complexity when framing the digital service innovation. With this work, we hope to inspire researchers and practitioners with the potential that CHAT has to offer for the reflective practice in digital service innovations.