Wireless NRF24L01 chip compatibility
Yes, they are compatible. The functionality is determined by the chip, not by the surrounding components.

With some care the NRF24L01 is also compatible with the NRF24L01+, RF70, and RF73.

"It tells that it supports 1 to 6 communication? " - is that a question? - Yes, they all support 1:N communication (in datagram mode - no acknowledging/retransmission). They also support 6 receive 'channels' per chip.