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There's a negative feedback I've never thought about before, just occurred to me. Both stages are connected to a common supply rail, so if the voltage amp swings up, the current draw from the emitter follower increases and due to the 10k resistor the supply rail voltage sags, thus with increase in output voltage the supply voltage falls and acts like a negative feedback to the voltage amplifier stage. This probably has no feasible application, because the supply rail usually carries noise from the power supply as well, but if the power supply ia very ripple suppressed, it might work.
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