Yes - the whole circuit has a bandpass characteristic. However, the frequency response of the circuit - in particular, the rising part of the transfer curve for frequencies below the maximum - is determined by all coupling capacitors aand the associated time constants within the circuit. Hence, it is not surprising that the transfer curve is not identical to a simple 2nd-order L-C bandpass. It is rather a "mixture" between bandpass and high-pass elements. This interpretation is supported by the fact that the falling characteristic (for large frequencies) approaches (nearly) the expected 20dB/dec drop.

Yes - the whole circuit has a bandpass characteristic. However, the frequency response of the circuit - in particular, the rising part of the transfer curve for frequencies below the maximum - is determined both by the L-C resonant circuit as well as all coupling capacitors and the associated time constants within the circuit. Hence, it is not surprising that the transfer curve is not identical to a simple 2nd-order L-C bandpass. It is rather a "mixture" between bandpass and high-pass elements. This interpretation is supported by the fact that the falling characteristic (for large frequencies) approaches (nearly) the expected 20dB/dec drop.