TL16C754 Interrupts

I have a paper design using 6 off TL16C754 quad Uarts for a 24 channel bidirectional serial controller with software flow control. It shows all interrupt lines INT(A -D) on each chip connected together (all 24 interrupt lines connected to a processor input pin). My concern with this is that there could arise a 'bus contention' issue as the pins could be in either active High or Low state depending on the operation e.g. Low when UART 1 transmitting as in Figure 18 in the datasheet and High after UART 2 receives a STOP bit as in Figure 15. The designer insists that this is not an issue. Could you please advise whether there is a potential problem or not? If there is would diode ORing the interrupt lines with a pull-down resistor be a good solution? The processor has a 3.3V supply and has 5V tolerant inputs.