CONFLICT IN TFC PATTERN. RPTR CLAIMS NMAC; BUT NOT SUBSTANTIATED BY SIT. POSSIBLE LATE HDOF OF CONFLICTING TFC TO TWR; BUT TWR CTLR HAD SEPARATION.

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FLT WAS ORIGINALLY FPO-MCO. MCO CLOSED DUE TO TSTMS. WE HELD AWHILE THEN DIVERTED TO MLB; OUR PLANNED ALTERNATE. PATRICK APCH SEEMED TO BE HAVING SOME DIFFICULTY AS THEY GAVE US A HDG THAT WAS THE RECIPROCAL OF INTENDED; FOLLOWED BY A DSCNT CLRNC FROM 7000 FT TO 1500 FT THAT WAS QUICKLY CHANGED TO 4000 FT; THEN LEFT US AT 4000 FT FOR WHAT SEEMED TO BE A LONGER THAN USUAL TIME. I THINK IT HAD TO DO WITH ALL THE ATC ACTIONS NECESSITATED BY THE WX AT MCO. GOT CLRED FOR THE ILS BACK COURSE TO RWY 27L AT MLB. WHILE ON APCH FREQ; HEARD SOME DISCUSSION ABOUT A LEAR JET COMING FROM THE N FOR LNDG AT MLB. PICKED UP THE LEAR VISUALLY AND ON TCASII AT 1:30 - 2 O'CLOCK; APPROX 5 MI. WERE TURNED OVER TO TWR WHILE STILL HIGHER THAN NORMAL; AND MLB TWR CLRED US TO LAND. WE DID A COUPLE OF NECESSARY COCKPIT CHORES AND MOMENTARILY LOST SIGHT OF THE LEAR; BUT KNEW FROM WHAT WE'D SEEN AND THE TCASII THAT HE WAS CLOSE; SO WE WERE GLAD WE WERE A LITTLE HIGH FOR SEPARATION. HEARD THE LEAR CALL; AFTER WE WERE CLRED TO LAND; WANTING A R BASE ENTRY FOR RWY 27L. TWR SAID NEGATIVE; THAT THERE WAS ALREADY AN ACFT ON FINAL CLRED TO LAND (US). SHORTLY THEREAFTER; OBSERVED THE LEAR AT 3 O'CLOCK; SLIGHTLY BELOW CO-ALT AND LESS THAN 1 MI COMING AT US. SIMULTANEOUSLY HEARD THE LEAR CALL HE HAD US IN SIGHT. IT WAS APPARENT THE LEAR WOULD PASS CLR BELOW AND BEHIND; ALTHOUGH WITH MUCH LTSS; SO WE SLOWED OUR DSCNT TO PRESERVE VERT SEPARATION AND MADE NO OTHER MANEUVERS. PART OF THE PROB SEEMED TO BE A HDOF THAT PUT THE LEAR IN CLOSE BEFORE HE WAS ABLE TO COME UP ON TWR FREQ.